H22 stumbling ... Help

[aero]

Hey, well the h22 is running a little better. I set the timing @ 15.. right in the middle. I still have this stumbling kind of feeling if im just cruising at a constant speed. Like i'll be driving at 20mph, and you can slightly feel it like pushing forward, then slowing down. Its just a little bit, but its noticable. If you are accelerating, its fine.


My only other problem is my stupid exhaust has a hole I sound like a ricer.. it sucks. But only when I get on it.. so guess i will be driving slow for a while.

[h22sparkle]

sometimes the stumble happens id set the timing at 16 is it a usdm or jdm engine. Do you have in intake/header/exhaust what size is the piping on the exhaust? did you perform the maintenance prcedures,changing the cap, rotor,soarkplugs,fuel filter,motor oil . Whats your setup do you have a p28 or a p13 ecu?