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                                              59.18hp / 36.83tq   stock bore/stock carb                                                                =================================================================
DYNO TESTING SECTION                                            ( click here for an actual Dyno Pull inside )
For the latest results, scroll to end of page.

WppRacing TRX450R Project ATV The Beginning Phase Click pictures to enlarge
This section will show how to turn a stock 30-33hp TRX into a great mx/woods 44 hp Quad.	Final Dyno Readings 44.27max hp 30.51max torque
Before

Suspension: The front a-arms were replaced with JD Performance +2 Standard Travel A-Arms. Works Triple Rate MXC Front Springs/Fast Mann Racing Revalving and a Works Rear Shock replace the standard items. Rear travel increased to 10.5in of travel	Chassis: Pro Armor Full chassis and A-Arm skid shields were used to provide protection, DG Pro V Alloy Front Bumper and the rear grab bar was replaced with a Moose Racing Item. A WppRacing Steering System was used which includes 909BFB Taper Wall Bars, Fly Racing Bar Adapters(1 1/8 and 3/4 rise) and Grip Lock grips. White Brothers Nerf Bars provide side protection. A Denton Steering Damper was also installed to reduce steering bump.
Drive Train: The stock gearing was changed from 14/38 to 13/39. A Renthal Ultralite Front Sprocket and a PBI Aluminum Rear Sprocket were used to transfer the power to the rear axle. A Renthal Works Gold Chain replaces the stock chain. The OEM tires were replaced with ITP Holeshot XC Front and XCR Rear Tires along with ITP Pro Series 10x5(adds 1 in width) Front and 9x9 Rear Rims. To aid in stopping a Galfer Front and Rear Wave Rotor were installed.	Engine: Stock compression was raised from 10.5:1 to 13.8:1 by replacing the oem piston with a Curtis Sparks/ JE Piston. 110octane Leaded Cam 2 Race Gas is used. The stock camshaft was replaced with a more radical HRC Camshaft. The carburetor has been fitted with a WppRacing jet kit(50 pilot, 180 main, stock needle set on the 5th clip) . An LRD Pro 4 Exhaust System replaced the restrictive stock system along with a K&N Air filter and K&N Crankcase Vent filter were used. The stock air box lid was modified to increase air flow.

Dyno Testing: Precision Motorsports provided the mobile dyno for the testing.	Stock TRX450R has 30-33max hp and 20-22max torque WppRacing TRX450R 44.27max hp and 30.51
	click on picture to see graph


*Click on Picture to Enlarge*	*Click on Picture to Enlarge*
WppRacing Pipe Pipe Test	February 5 , 2005
The pipes tested were - Curtis Sparks X6 Ceramic, Rossier, Pulse Charger,WB Carbon Pro, Baldwin, NMotion, HMF ,	The ATV used was my WppRacing 450R with the following mods - Rossier Exhaust,13.8:1 Piston, Cam 2 Race Gas 110 leaded, HRC Cam, HRC Needle, K&N Filter no lid, 50 Pilot, 2 turns open on a/f setting and 180 Main.

The pictures will be with each pipe installed with the Dyno graph . They are listed beginning with the lowest to highest HP reading. The Sparks will also have the Air Filter test included. Do to time each pipe used the 180 main. It showed to be at 13-13.5 on the A/F meter with the Sparks pipe. All test were done in 4th gear. Please note: the NMotion is a older model. The current pipe is different.
Sparks X6 Ceramic 44.95hp , 30.52 torque

NMotion 45.72 hp , 30.72 torque Pulse Charger 46.11 hp , 31.33 torque 170 main jet used

WB Carbon Pro 46.19 hp , 31.22 torque
Baldwin 46.43 hp , 31.47 torque
HMF 46.58 hp , 31.70 torque
Rossier 46.80 hp , 31.69 torque

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WppRacing Pipe test #2 02/19/2005 Rossier and Pulse Charger The ATV used was my WppRacing 450R with the following mods - Rossier Exhaust,13.8:1 Piston, Cam 2 Race Gas 110 leaded, HRC Cam, HRC Needle, K&N Filter no lid, 50 Pilot, 2 turns open on a/f setting and 185 Main. The pipe tested was the Rossier Engineering and Pulse Charger. The location was different from the test performed above. Each test will have different results do to location, temp, humidity, etc. Each pipe was jetted with a different main jets until the highest HP output was obtained . This test was performed in a large garage.

Here are the Dyno Graphs for different jets used.


Rossier Engineering Pulse Charger The Rossier posted a max hp of 45.70 and torque of 31.53 The PC posted a max hp of 45.27 and torque of 30.48 --------------------------------------------------------------------------------------------------------------------------------------------------
WppRacing Pipe Test #3 10/01/05 Yoshimura TRC Comp Series SS Full System Engine Mods- Yoshimura TRC Exhaust, 13.75 HH Piston, WppRacing Ported Head w/Titanium Intake Valves, Cam 2 Race gas 110 Leaded, Hot Cams STG 2, K&N Filter, No Air Box lid, 175 Main, 50 pilot, 2 turn open on mixture screw, and Vortex Ignition. (please note the following engine mods for this test)
Here are the graphs The K&N Filter / No Lid and 175 main showed the highest HP and Torque. 47.74 HP and 33.12 Torque -175 main jet Then I installed the HRC Lid and UNI FILTER. This is how the quad is ridden on the track. 47.60 HP and 32.37 Torque - 168 main jet ------------------------------------------------------------------------- WppRacing Pipe Test #4 11/05/2005 Yoshimura TRC Comp SS Full System Engine Mods- Yoshimura TRC Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, Cam 2 Race gas 110 Leaded, K&N Filter, No Air Box lid, 170 Main, 50 pilot, 2 turn open 49.05HP / 34.01Torque This is a comparison of the Yoshimura test on 10/1/05 and 11/05/05 ================================================================== ================================================================= WppRacing Pipe test #5 12/03/2005 with the Yoshimura TRC Comp SS Series and the DASA Performance Pipe Engine Mods- Yoshimura TRC Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, Cam 2 Race gas 110 Leaded, K&N Filter, No Air Box lid, 170 Main, 50 pilot, 2 turn open DASA Pipe DASA 50.05hp/ 35.15tq - YOSHIMURA 49.41hp/ 35.33tq ================================================================================================= ================================================================================================= WppRacing Pipe test #6 1/06/2006 with the DASA, ROSSIER, and RON WOOD PIPE and DB test Engine Mods- DASA Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, Cam 2 Race gas 110 Leaded, DASA Air Filter Kit, 182 Main, 50 pilot, 2 turn open DASA Best Run 50.65hp / 35.70tq Ron Wood Best Run 50.14hp / 35.01tq Rossier Engineering Best Run 50.12hp / 34.93tq Here is a comparison of the best runs for each pipe mph ======================================== WppRacing Pipe test #7 1/20/2006 DASA Exhaust System and DASA Air Filter Kit Engine Mods- DASA Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, Cam 2 Race gas 110 Leaded, DASA Air Filter Kit, 182 Main, 50 pilot, 2 turn open rpm mph 51.52HP / 34.24TQ ================================================== WppRacing Pipe Test #8 3/10/2006 DASA Exhaust with a Wpp Spark Arrestor DASA Filter and the WppRacing Modified DASA Filter Engine Mods- DASA Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, VP C12 Race Gas 108, DASA Air Filter Kit, 182 Main, 50 pilot, 2 turn open, and stock gearing. 50.26HP / 34.66TQ ================================================== WppRacing Pipe Test #9 4/7/2006 DASA Pipe and CT Racing Pipe Engine Mods- DASA Exhaust, Baldwin 14.1 Piston, Megacycle X2 Cam, WppRacing Ported Head w/Titanium Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 182 Main, 50 pilot, 2 turn open, and 14/39 Gearing DASA 49.61hp / 35.20tq CT Racing 49.30hp / 34.44tq ==================================================================== WppRacing / Venom Ported Head Test & Ron Wood Intake/ Dasa Intake 5/28/2006 Engine Mods- DASA Exhaust, Stock Carb Baldwin 14.1 Piston, Megacycle X2 Cam, Venom Ported Head W/Ferrea Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 195 Main, 50 pilot, 2 turn open, and 13/39 Gearing The Venom Ported Head did provide a HP increase at 7200rpms but lost some hp/tq below that. On the track this set up runs very good . Also tested was the Ron Wood Intake system and a Modified stock air box. The DASA intake system still provided the best HP and TQ. 52.03hp / 34.85tq (best HP and TQ) 51.92hp / 34.54tq (average) ================================================= WppRacing / Venom Ported Head Test #2 with Air Intake Mod 6/11/2006 Engine Mods- DASA Exhaust, Stock Carb, Baldwin 14.1 Piston, Megacycle X2 Cam, Venom Ported Head W/Ferrea Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 195 Main, 50 pilot, 2 turn open, and 13/39 Gearing This test was with the air resonator removed and a custom plug installed. The mod smoothed out the dip in the curve and made the A/F line flatter. The first graph was the base line for the test with the DASA Filter installed The second graph was with a Wpp/Mod DASA Filter installed The third graph was with a Durablue Foam Filter installed The last is an overlay of the first test(5/28/06) showing the dip in the curve and the runs from the day. 52.13hp / 35.49tq (best HP) 52.07hp / 35.75tq (best TQ) 52.05hp / 34.93tq (average) ======================================= WppRacing/Wicked Motors Ported Head Test 7/08/2006 Engine Mods- DASA Exhaust, Stock Carb, Baldwin 14.1 Piston, Megacycle X2 Cam, Wpp/Wicked Motors Ported Head W/Ferrea Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 190 Main, 50 pilot, 2 turn open, and 13/39 Gearing The porting was a joint venture between WppRacing and Wicked Motors. Wicked Motors is now part of Watercraft Performance & ATV and will provide cylinder porting and valve work. We are still in the R&D stage and now that we have the needed info, changes will be made and improved with the next cylinder head. More HP will be coming soon. All will be done using the STOCK Carb. I was hoping for 54hp and fell a little short. By having the head ported with a software program it laid the foundation for making changes. Since the head has been mapped ,now along with the graph, we can see what and where the port change needs changed. IMO Its not bad for the first shot 53.02hp / 35.78tq (best HP and TQ) 52.74hp / 34.99tq (average) ======================================= WppRacing/Wicked Motors Ported Head Test 8/05/2006 Engine Mods- DASA Exhaust, Stock Carb, Baldwin 14.1 Piston, Megacycle X2 Cam, Wpp/Wicked Motors Ported Head W/Ferrea Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 190 Main, 50 pilot, 2 turn open, and 13/39 Gearing I now have the next ported head with the changes made. The before and after figures were installed in the program and it showed about 1-1.5 gain on bottom/mid and .5-1.0 on top. It also had a smoother flow pattern and should not have the choppy graph as the first dyno test did. Went on the dyno today and the head performed like the program showed 53.72hp / 34.27tq (best HP) 53.55hp / 36.38tq (best TQ) 53.45hp / 35.64tq (average) =================================================== WppRacing WEB 943/921 Cam Test 11/06/06 Engine Mods- DASA Exhaust, Stock Carb, Baldwin 14.1 Piston, WEB 943/921 Cam, Wpp/Wicked Motors Ported Head W/Ferrea Intake Valves, Baldwin Valve Springs, VP MR8 Race Gas , DASA Air Filter Kit/with WppRacing Mod Filter, 180 Main, 50 pilot, 2 turn open, and 14/39 Gearing ================================================== WppRacing DASA Quiet Core Test Wpp/Dasa Mod S/A and the Dasa Insert 12/03/06 ======================================= WppRacing DASA/RAGE pipe test The difference between these pipes is the head pipe and the silencer end cap. A torque tube was also tested 12/04/06 DASA 54.40hp / 35.24tq RAGE 54.43hp / 35.07tq RAGE w/tt 54.62hp / 35.24tq ======================================= WppRacing OEM CDI and Dynatek CDI Test 12/16/06 Dynatek 54.67hp / 34.86tq OEM 55.77hp / 36.18tq =================================================== WppRacing DASA,RAGE,ESR and HMF Pipe Test 12/16/06 RAGE 55.77hp / 36.18tq DASA 55.08hp / 35.44tq ESR 54.35hp / 35.55tq HMF 54.10hp / 36.16tq ======================================== ======================================== 2007 Dyno test Results ======================================== WppRacing CDI Test, Dynatek Programable/ WppRacing Custom Timing Curves 1/21/2007 Factory Dynatek WppRacing Custom ======================================== WppRacing VP Fuel Test- VPU4 / VPMR9 2/21/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 493 WEB Cam Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System VPU4- VPMR9- 57.67hp /36.93tq - VPU4 57.75hp / 37.08tq - VPMR9 ======================================== WppRacing WEB 208 Test 3/11/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 208 Cam Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System 59.16hp / 36.39tq ================================================= WppRacing Quiet Core/Spark Arrestor 3/17/2007 complete with DB readings Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 208 Cam Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System ====================================== WppRacing Air Filter Test 3/17/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 208 WEB Cam Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System 59.18hp / 36.83tq ====================================== WppRacing VP Fuel Test 4/8/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 493 WEB Cam, Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System VP U4, VP U4.1 and VP MR9 VP U4 180 main jet 57.83hp / 37.41tq VP U4.1 215 main jet 56.86hp / 36.76tq VP MR9 195 main jet 57.52hp / 37.05tq ======================================= WppRacing ESR and Fuel Customs Intake Test 4/11/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Baldwin 14.1 Piston, Baldwin Valve Springs 493 WEB Cam, Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System ESR INTAKE FUEL CUSTOM ESR Intake 55.91hp / 36.20tq Fuel Customs Intake 57.28hp / 36.78tq ======================================== WppRacing Wiseco 13.1 Piston 4/22/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Wiseco 13.1 Piston, Baldwin Valve Springs 493 WEB Cam Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System 56.84hp / 36.17tq ======================================== WppRacing Wiseco 13.1 Piston HRC CAM 4/26/2007 Engine Mods- Rage/DASA Exhaust, Stock Carb, Stock Bore, Wiseco 13.1 Piston, Baldwin Valve Springs HRC Cam, Wpp/Wicked Motors Ported Head , VP U4 Race Gas , Fuel Customs Intake System 55.70hp / 35.23tq ======================================== WppRacing 13.1 HRC Cam / WEB 493 the best of each cam 4/26/2007 WEB 493 - 56.84hp / 36.17tq HRC Cam- 55.70hp / 35.23tq =================================================== WppRacing Engine Test Results These are graphs of the best results for different set ups that have been tested. ======================================== WppRacing Different Exhaust Systems Installed LRD SPARKS PULSE CHARGER YOSHIMURA TRC ROSSIER CT RACING RON WOOD TC SHORTY DASA RAGE/DASA CHM WPPRACING CUSTOM PIPE BALDWIN/HMF DASA/Joe Byrd Pipe ========================================

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