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ridinthedunes
03-20-2006, 01:37 PM
am putting a JE 10:8:1 87mm (416) piston and a stage 2 cam in my 400ex. have a power bomb header and stock muffler with power tip, K&N, airbox lid vented....not expecting any big change...wondering if anyone has an idea of power gains....seat of the pants or hp numbers???

Thanks for your time,
Rob

ridinthedunes
03-20-2006, 02:13 PM
bump.....nobody?

GPracer2500
03-20-2006, 02:38 PM
It will be a noticable improvement. Taking a guess, I might say that if your stock quad made 26 hp then your current setup might make around 30 or maybe a little more with spot-on jetting. Just a guess.

ridinthedunes
03-20-2006, 02:40 PM
I'd be happy with that....thanks

exrider008
03-20-2006, 02:56 PM
i dont know how much HP u will get but u should get a full exhaust to get the full power out of ur 416

CHEVYZ
03-20-2006, 02:58 PM
I was thinking the same thing. You have a header, but the pipe is what really makes the difference.:chinese:

Power-wise it should do well.......

ridinthedunes
03-20-2006, 03:19 PM
I'm using a power tip instead of a full pipe...all the aftermarket pipes are rediculously loud....I had to go up 2 jet sizes on the main when I installed it so it must be flowing pretty well

hondaboy400ex55
03-20-2006, 04:49 PM
well i dont know bout anything else but my white bros E series is funtcional where you can make it super loud or preety quiet