5785 FG Chung Yang engine V260/CY 4 Bolt Version
Product information "5785 FG Chung Yang engine V260/CY 4 Bolt Version"
Genuine FG spare/option part.
Genuine FG/Chung Yang V260 engine, 26 cm³, 4-bolt head.
This is the current stock engine of all 1/6 FG off-road and monster cars.
Genuine FG/Chung Yang V260 engine, 26 cm³, 4-bolt head.
This is the current stock engine of all 1/6 FG off-road and monster cars.
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This is the G260 in the 26 cm³ version.The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch and / or ball beard carburetor are optionally available at additional charge. Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise. Attention! We recommend to run exclusively fully synthetic 2-stroke engine oil, like y0813 Motul 800 racing oil.
26 cm³ Zenoah engine for large scale cars!Please note: contrary to their new designation the displacement has not been increased! The outer dimension didn't change, so you don't need any additional parts for the engine swap!The engines feature the following improvements over their G260RC:Quantity of cylinder mounting bolts increased from 2 to 4Improved strength of crankcaseAdded additional bearing on the PTO (clutch) side of crankshaftRedesigned shape of cylinder finsDimension of air intake port is 5% widerNew carburetor (WT-990) Contains internal fuel pump which increases acceleration from idle to wide open throttle.Removal of choke valve increases performance by increasing air flow to the carburetor Changed material of the insulator gasket to metal, which improves sealing performanceThe engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch and / or ball beard carburetor are optionally available at additional charge. Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise. Attention! We recommend to run exclusively fully synthetic 2-stroke engine oil, like y0813 Motul 800 racing oil.
Same dimensions as the Zenoah G230, G240, G260, G270.New generation Zenoah engine with 28,5cm³ cylinder capacity and approx. 3.9 hp. The cylinder is fixed with 4 screws. The technical details are identical to the Zenoah engines G240RC and G270RC.The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch and / or ball beard carburetor are optionally available at additional charge. Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise. Attention! We recommend to run exclusively fully synthetic 2-stroke engine oil, like y0813 Motul 800 racing oil.
The SPEED TEC EXPERT genuine Chung-Yang engine is optimized for performance with sophisticated craftsmanship and guarantees, besides greatly increased performance, excellent workmanship and stamina. SPEED TEC EXPERT version modifications: Cylinder: Adjustment of compression; enlarged ports, fuel management milled, machined and polished exhaust and intake. Piston: weight reduced; skirt shortened; oil rings, piston above and below piston ring tapered and piston dome ground. Crankshaft: is adjusted and aligned. Flywheel: weight reduced and checked for runout. Gaskets: use of premium quality gaskets.To achieve the optimum performance gain of a SPEED TEC EXPERT engine, we recommend the use of a tuned pipe ( to the tuned pipes ).
The SPEED TEC EXPERT genuine Zenoah 30,5 cm³ engine is optimized for performance with sophisticated craftsmanship and guarantees, besides greatly increased performance, excellent workmanship and stamina. SPEED TEC EXPERT version modifications: Cylinder: Adjustment of compression; enlarged ports, fuel management milled, machined and polished exhaust and intake. Piston: weight reduced; skirt shortened; oil rings, piston above and below piston ring tapered and piston dome ground. Crankshaft: The Zenoah 30,5 cm³ SPEED TEC Expert comes with the genuine Zenoah +2 mm stroker crank #577953101. It is adjusted, aligned and balanced. Flywheel: weight reduced and checked for runout. Gaskets: use of premium quality gaskets.To achieve the optimum performance gain of a SPEED TEC EXPERT engine, we recommend the use of a tuned pipe ( to the tuned pipes ).
To ensure the required cooling for current 1/5 and 1/6 engines the flywheels have fins on both sides. Therefore the fan housing has large openings on the crankcase side for the required air supply. However, the risk of foreign objects (grass, sand, or even stones!) entering here Is very high! As a result, broken fins on the flywheel occur frequently. This leads to reduced cooling efficiency and - even more critical vibrations from a flywheel which is out of balance due to missing fins. Therefore, this kind of flywheel protection is highly recommended, especially for offroad use. The product video explains the handling in detail! Note:It is essential to thoroughly clean and degrease the crankcase prior to attaching the hook-and-loop tape (OKS2661)!For installation on Chung-Yang and Zenoah engines in FG cars, the crankcase cover must be slightly modified in two places where the engine mount is attached (see Figure 6 and 7). Furthermore the fit of the fabric must be as tight as possible in the region of the layshaft pinion (in front of the differential ring gear!) (see Figure 8).Set includes:Special tailored fabric with sewed on hook-and-loop tapehook-and-loop tape for installation to the crankcaseAdhesive for securing the hook-and-loop tape
Accessories / Spare parts
Genuine HT spare/option part. New billet version, CNC-machined!Fits Zenoah G230/240/260/270/290/320, Losi, HPI Fuelie and CY engines. Not as easily damaged as the stock plastic unit.Does not fit PT (Carson/Smartech) engines!Contents:1 piece
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Genuine HT spare/option part. Special fabric bag to protect engines, rc-plates or other expensive items. Large opening and pull-string closure.Size:Diameter 200 mmHeight 200 mmContents:1 pieceAccessories not included.
Fully synthetic oil, available in three blends. 1-liter bottle.The optimal 2-stroke oil for 23-30 cm³ engines/cars Motul Racing Oil is available in three different blends: On-Road for high revving onroad cars Off-Road for cars with high torque enginesMixing ratio for 1/5 & 1/6 applications: We recommend a mix with about 4% oil, which means 200 cc of oil to 5 litres of gas (1:25 ratio). With one litre of Motul oil you can mix about 25 litres of optimal fuel for your 1/5 or 1/6 car. That's enough for well over 20 hours of driving fun! Oil / Gas Oil percent Oil per 1 liter of gasoline Oil per 2 liter of gasoline Oil per 3 liter of gasoline Oil per 4 liter of gasoline Oil per 5 liter of gasoline 1:20 5% 50 ml 100 ml 150 ml 200 ml 250 ml 1:25 4% 40 ml 80 ml 120 ml 160 ml 200 ml 1:30 3,33% 33 ml 67 ml 100 ml 134 ml 167 ml 1:33 3% 30 ml 60 ml 90 ml 120 ml 150 ml 1:35 2,86% 29 ml 58 ml 86 ml 115 ml 143 ml 1:40 2,5% 25 ml 50 ml 75 ml 100 ml 125 ml 1:50 2% 20 ml 40 ml 60 ml 80 ml 100 ml
Genuine Champion spare/option part.OEM spark plug for Zenoah G230/240/260/270/290/320.Ideal too for PT, Chung Yang, Losi, HPI-Fuelie, Smartech, Nutech and Carson and other engines.The most widely used, qualitatively best spark plug for the model sport! Especially by the most 1/6 scale models the short ceramic body is indispensable, because otherwise on grounds of the heightened mounting position- the spark plug would protrude beyond the roll cage and therefore is extremely fragile by flashovers.Contents:3 pieces
Genuine HT spare/option part. Helpful tool for removal of clutch shoes, flywheels and many more.FitsZenoah G230/G240/G260/G270/G290/G320Chung-Yang enginesPT enginesLosi enginesHPI enginesThreadsize:M10 x 1Contents:1 piece
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Genuine HT spare/option part. Especially for CY / Zenoah G230/240/260/270/290/320, HPI and Losi engines.Can be used for removal of the standard clutch as well!Contents:1 piece
Marston Universal blue is the leading non-setting gasket and sealing compound in use world-wide. The product is used by many of the world?s major automotive manufacturers and by several Formula 1 teams.Features- Non hardening and non setting- Unlimited assembly time- Vibration resistant- Allows metal to metal contact- Resistant to combustion products, water, engine coolant, petroleum, lubricating oils, kerosene and fluorocarbon refrigerants- Seals surface imperfections- Withstands rapid variations in temperature80 ml tube
Content: 80 Milliliter (€123.75* / 1000 Milliliter)
Especially for installation of all engine gaskets. Temperature resistant from -55 °C to +200 °C. Resistant to water, mineral oils, synthetic lubricants, fuels, organic solvents and refrigerants. info: Hand tight: 10 - 20 minReady to use: 1 - 3 hoursGap fill: 0.5 mmContent: 50 ml Notes for usage: This surface seal is not for use as the sole sealant, it should always be applied in combination with a paper gasket.The HT-surface sealing agent should be sparsely applied over the entire surface, with care being taken that the sealant does not enter the devices internals (e.g. crankcase, differential a.s.o.) during the assembly.
Content: 50 Milliliter (€538.00* / 1000 Milliliter)
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Genuine HT spare/option part. After-Run is a performance enhancing preservation, which ensures that the engine starts properly, even after a long time (winter break) storage. Added to the fuel it keeps the fuel system clean.Among other After-Run conserves the diaphragm of the Walbro carburetor!For long term storage (i.e. during winter!) "vital" for the carburetor diaphragms!For 23 to 32 cm³ engines like Zenoah, Chung Yang, PT, Losi, HPI a.s.o.It binds water in the fuel, particularly important when the engine is not run regularly or after wet races. After-Run improves engine performance, ensures better combustion, removes debris and residues. Simply add the content of the bottle to 5 litres of fuel.Contents:1 piece / 20 ml
Content: 20 Milliliter (€345.00* / 1000 Milliliter)
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46 teeth gear wheel for the layshaft.Diameter 72 mmWidth 15.5 mmTooth width 12 mmModule: m=1,5
Genuine FG spare/option part. Zenoah bolts 7318 are required for installation.Content:2 pieces
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y0557 Zenoah G230RC, with Walbro WT 603B carburetor (also available in the ball-raced version through the shop's options menu)23 cm³ Zenoah engine for large scale cars!The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch are optionally available at additional charge.y1009 Zenoah G240RC with Walbro WT 990 carburetor (also available in the ball-raced version through the shop's options menu)23 cm³ Zenoah engine for large scale cars!Please note: contrary to their new designation the displacement has not been increased! The outer dimension didn't change, so you don't need any additional parts for the engine swap!The engines feature the following improvements over their G230RC:- Quantity of cylinder mounting bolts increased from 2 to 4- Improved strength of crankcase- Added additional bearing on the PTO (clutch) side of crankshaft- Redesigned shape of cylinder fins- Dimension of air intake port is 5% widerContains internal fuel pump which increases acceleration from idle to wide open throttle.Removal of choke valve increases performance by increasing air flow to the carburetor - Changed material of the insulator gasket to metal, which improves sealing performanceThe engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch are optionally available at additional charge. y0553 Zenoah G260RC with Walbro WT 603B carburetor (also available in the ball-raced version through the shop's options menu)This is the G260 in the 26 cm³ version.The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch are optionally available at additional charge. y1011 Zenoah G270RC with Walbro WT 990 carburetor (also available in the ball-raced version through the shop's options menu)26 cm³ Zenoah engine for large scale cars!Please note: contrary to their new designation the displacement has not been increased! The outer dimension didn't change, so you don't need any additional parts for the engine swap!The engines feature the following improvements over their G260RC:- Quantity of cylinder mounting bolts increased from 2 to 4- Improved strength of crankcase- Added additional bearing on the PTO (clutch) side of crankshaft- Redesigned shape of cylinder fins- Dimension of air intake port is 5% wider- New carburetor (WT-990) Contains internal fuel pump which increases acceleration from idle to wide open throttle.Removal of choke valve increases performance by increasing air flow to the carburetor - Changed material of the insulator gasket to metal, which improves sealing performanceThe engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter are optionally available at additional charge. 7800 Zenoah G290RC with Walbro WT 990 carburetor (also available in the ball-raced version through the shop's options menu)Same dimensions as the Zenoah G230, G240, G260, G270.New generation Zenoah engine with 28,5ccm cylinder capacity and approx. 3.9 hp. The cylinder is fixed with 4 screws. The technical details are identical to the Zenoah engines G240RC and G270RC.The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch are optionally available at additional charge. Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise.Zenoah G320RC with Walbro WT 1107 carburetor (also available in the ball-raced version through the shop's options menu)With 32 cm³ and 30% more power than the Zenoah G290.Significantly more torque and higher stamina due to larger sized bearings all around, with Racing Carburetor Walbro WT 1107.The motor is supplied with WT-1107 carburetor and spark plug.SpecificationType: Two stroke gasoline engineDisplacement: 31,8 cm³Bore: 38 mmStroke: 28 mmWeight: 2,3 KgOverall Dimension:Length: 167 mmWidth: 215 mmHeight: 196 mmMaximum Output: 4,6 PSMaximum Torque: 2,00 N-mRotation Direction: CounterclockwiseCarburetor: Walbro WT-1107Spark plug: CMR7HStarting: Recoil starterFor all HPI Baja 5 cars the G320RCer clutch housing has to be shortened at the mounting base, for Losi 5ive- T and Desert Buggy XL cars the clutch housings overall length must be shortened to CY size.When installing the air filter you must pay attention to the length of the screws.For use on Losi and HPI we recommend M5x45 screws (like H94763); you can also cut existing screws to length, of course.When ordering with a modified clutch housing we will include these screws!In our shop you can select from Zenoah G320RC engines already modified to fit your HPI or Losi car.The installation of the Zenoah G320RC in other cars (like FG or Smartech buggies / monsters a.s.o.) is not even remotely straightforward, since the layshaft pinion (the small pinion in front of the big differential spur gear) is in the way for the larger Zenoah G320RC crankcase.Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise.
46 teeth gear wheel for the layshaft.Diameter 72 mmWidth 15.5 mmTooth width 12 mmModule: m=1,5
Genuine Carson spare/option part. 4 bolt version (4 head bolts!)Contents:1 set
Same dimensions as the Zenoah G230, G240, G260, G270.New generation Zenoah engine with 28,5cm³ cylinder capacity and approx. 3.9 hp. The cylinder is fixed with 4 screws. The technical details are identical to the Zenoah engines G240RC and G270RC.The engine will be delivered with pull starter, carb and spark plug / spark plug cap. Genuine Zenoah air filter and / or complete clutch and / or ball beard carburetor are optionally available at additional charge. Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise. Attention! We recommend to run exclusively fully synthetic 2-stroke engine oil, like y0813 Motul 800 racing oil.
OEM engine from HPI Baja 5SS and 5T.Get more power and torque out of your Baja with the Fuelie 26S engine! Get the edge on your racing buddies with a complete engine upgrade. Content:1 pieces
With 32 cm³ and 30% more power than the Zenoah G290.Significantly more torque and higher stamina due to larger sized bearings all around, with Racing Carburetor Walbro WT1107.The motor is supplied with WT-1107 carburetor and spark plug.SpecificationType: Two stroke gasoline engineDisplacement: 31,8 cm³Bore: 38 mmStroke: 28 mmWeight: 2,3 KgOverall Dimension:Length: 167 mmWidth: 215 mmHeight: 196 mmMaximum Output: 4,6 PSMaximum Torque: 2,00 N-mRotation Direction: CounterclockwiseCarburetor: Walbro WT-1107Spark plug: CMR7HStarting: Recoil starterFor all HPI Baja 5 cars the G320RCer clutch housing has to be shortened at the mounting base, for Losi 5ive- T and Desert Buggy XL cars the clutch housings overall length must be shortened to CY size.With the new "K & N" version of the Losi DBXL there is another detail, which need to be considered.From the very beginning the hole pattern for the engine installation in the DBXL chassis plate was no precise match to the hole pattern of the engine, even when delivered in stock form with standard engine. Now with the "K&N" version the engine mount has been changed to eliminate this discrepancy. However, all aluminum engine mounts available on the market share their dimensions with the previous plastic engine mount. For the installation of a G320 Zenoah in a "K&N" -DBXL two possible combinations exist in order to obtain the correct hole pattern:When using the standard (new) plastic engine mount a shortened clutch housing is required as in a 5ive-TWhen using an aluminum engine mount a stock length clutch housing is requiredSeparately, it is recommended to enlarge the cutout in the body panel in front of the K & N air filter for about 2 - 3 mm to ensure that the panel cannot chafe on the air filter.When installing the air filter you must pay attention to the length of the screws.For use on Losi and HPI we recommend M5x45 screws (like H94763); you can also cut existing screws to length, of course.When ordering with a modified clutch housing we will include these screws!In our shop you can select from Zenoah G320RC engines already modified to fit your HPI or Losi car.The installation of the Zenoah G320RC in other cars (like FG or Smartech buggies / monsters a.s.o.) is not even remotely straightforward, since the layshaft pinion (the small pinion in front of the big differential spur gear) is in the way for the larger Zenoah G320RC crankcase.Compatibility Zenoah / Losi 5ive-T:Please note that for installation in a Losi 5ive the fan cover must be swapped for a Losi or CY cover #5341 in order to fit the chassis" bolt pattern.If you want to install a Zenoah engine into the Losi 5ive, you usually have to use a fan cover from the CY engine.However, there is a workaround to maintain Zenoah fan cover.The adjustment is done via the pinion specific mounting plates for the engine. The change always affects only the rear, outer (carburetor side) plate under the fan cover. This is rotated by 180°; so that the embossed number on this plate faces the exhaust side of the engine!18T pinion: use 20T plate, rotated 180°19T pinion: use 19T plate, rotated 180°20T pinion: use 18T plate, rotated 180°On the plus side you gain the opportunity to easily mount a Zenoah engine keeping the original fan cover. On the other hand there will be the disadvantage of the necessity to combine two different sets of engine mounting plates when installing any pinion other than the stock 19T version. Therefore we do not recommend this workaround for everyday use. Nevertheless it works perfectly should ever the need arise. Attention! We recommend to run exclusively fully synthetic 2-stroke engine oil, like y0813 Motul 800 racing oil.
The SPEED TEC EXPERT genuine Chung-Yang engine is optimized for performance with sophisticated craftsmanship and guarantees, besides greatly increased performance, excellent workmanship and stamina. SPEED TEC EXPERT version modifications: Cylinder: Adjustment of compression; enlarged ports, fuel management milled, machined and polished exhaust and intake. Piston: weight reduced; skirt shortened; oil rings, piston above and below piston ring tapered and piston dome ground. Crankshaft: is adjusted and aligned. Flywheel: weight reduced and checked for runout. Gaskets: use of premium quality gaskets.To achieve the optimum performance gain of a SPEED TEC EXPERT engine, we recommend the use of a tuned pipe ( to the tuned pipes ).