heres my problem..

[FR33K]

okay just finished b16a engine conversion and got rid of all the error codes in the ecu.. but now i have a problem with acceleration below 4500rpm.
the car backfires and hesitates REAL bad.. as soon as you reach 4500 then its like an instant power kick in and the car jolts forward and runs perfectly to 8K..
anyone have any ideas ??

[Mugen boy]

time to get a Apexi vafc , freek i can get you one cheap just talk to me in messenger lol, dnt know wether it will fix your problem but it will make your car go better lol

[[ slayer ]]

may sound simple, but could be ur fuel filter. i had this exact problem with my gen 2 (d16) b4 i bought it (test drive), and they just replaced the fuel filter and it fixed the problem completely.

[FR33K]

mugen boy.. let me get it running first lol !fuel filter is brand new ???...
and why would it do it in low revs only ??
hmm sometimes it does it worse then other times so that could be it...

[FR33K]

i unplugged the throttle position sensor and now it runs fine... but i dont wanna drive around with a check engine light on lol

[aznsiko]

could be fuel problem.. or timing.. because i got my car tuned at hannys and its doing the same.. but rarely.. and its only til like 2500RPM ot so.. and plus ive lost my license so i havent bothered with it yet..