new pipe kit, but it's cutting out need help!

[Leschj03]

hey everyone, i just bought an Alba Racing full pipe kit for my quad. I've installed everything but i can't seem to get it to run right at hi revs. it cuts out at about 3\4 throttle in all my gears. Does this mean i am gettin too much air, or too much fuel? i've adjusted the air fuel mixture screw to the pipe company's standards, but i'm stumped. could anyone help me out?

[cheezy400]

is it back firing

[YFZ450Ridr]

it might sound stupid but, check to see if your choke is on. that happend to me and i ripped apart the entire quad because it wouldnt run right, and the choke was on.

[HUNTSALOT]

The same thing happend to my buddys yo need a rev limiter

[Leschj03]

no the choke isnt on. The quad starts great even better that before with stock exhaust. I dont think its back firing it seems to be cutting out.

[batgeek]

you didn't mention if you re-jetted it.

if you have, what main jet size did you go to and what elevation are you at.

[adema]

yeh just go back and check the jetting on the bike but i forgot what thing controlls the throttle at 3/4 ask some one but surely it is you jettting.

[z03n05]

You have too large of a main jet. Go down one main jet at a time until it stops. If it is backfiring, you are too lean and did to go up in size.

[Leschj03]

i just put in the jets that came with the pipe. It is the alba pipe with header k&n and no airbox lid.

[400exrider707]

Originally posted by Leschj03
i just put in the jets that came with the pipe. It is the alba pipe with header k&n and no airbox lid.

That doesn't mean that they were the correct jets. Those jets were to get you in the ballpark and the rest is up to you.

[400exrider707]

Originally posted by HUNTSALOT
The same thing happend to my buddys yo need a rev limiter

:huh Please dont give wrong information If his machine cuts out before it even gets to the rev limiter how will a high rev box help at all??? Some proper jetting is in need here.