I JUST INSTALLED MY WB PROMEG SYSTEM WITH DYNO JET KIT AND TWIN AIR FILTER. THE POWER GAIN SEEMS PRETTY GOOD I HAVE MIXTURE SCREWS OUT 3.5 TURNS AND 165MAIN.. IT RUNS FLAWLESS BUT DO U THINK IF I RAN A 170MAIN I WOULD SEE ANY MORE POWER THAN I ALREADY HAVE...

 

How is the bottom end now. I have been thinking about getting a wb pipe.

 

Low end has not changed, not that i have noticed i will let u know how it runs with 170main in it

 

Is the pro meg the complete system? What is the power increase? how many disks are you running? Be sure to let us know how that 170 main works.

 

If i read it right a 170 main will only help from 3\4 to full trottle. more fuel will not help unless you have the air to support it

 

I have a White Bros. Pro Meg complete system with a K&N, 165 main.It runs fine but I am fouling plugs left and right.Does anyone know how to fix this? thanx

 

THE 170MAIN JET RAN ALOT BETTER LOW AND MID RANGE IS UNBELEIVABLE TOP END IS BETTER ALSO IM VERY HAPPY WITH THIS PIPE, AS FAR AS FOULING PLUGS TRY TURNING FUEL MIX. SCREWS OUT TO 3.5.........

 

how can a 170 help bottom or midrange when it only controls 3/4 to wide open

 

Because you can be WOT at any RPM. Example: Idling in gear, open the throttle WOT, your on the main jet, and in the low-end RPM range.

 

thats true but big gun recommends go to a 158 mainfor there pipe with the air box lid removed. white brothers calls for a2 to3 step larger from stock 148 in his artical in dirt wheels few weeks ago.a 36 mm carb will only let so much air trough, thats why people are going to 39fcrs