ccw998

If I street port my engine, do I need aftermarket computer? or can I still use the stock one? My mods are only dp and cat-back.

Thanks

KZ1

I would get one, although a streetport only requiers maybe 1 0r 2 degress of timing retarded, it needs a lot more fuel.

tough to say, you may be okay, but I woudln;t do it, you woudl negate the advantages of teh strretport in the firstplace.

turbogarrett

iTrader: (1)

i drove my car with a new streetport for 4000 miles before buying an aftermarket ecu. ran ok with stock one,just keep the boost down. i'd recommend spending the money on one right away, instead of running to lean and blowing a new $4000 motor.

mmonaco

ya im in the same boat. I really want to know. I got a intake downpipe and exhaust. I dont want to risk it.
Marc

ccw998

My friend got a street ported engine. When he release the gas pedal, I always hear a "pop" sound from the exhaust. Is it normal? or something problem for his tunning?

jspecracer7

Problem with tuning.

LilFatCrazyWop

maybe back fire, if it is a back fire id tune it better but if there was fire shooting out the exhaust when it happens i would keep it!!!!!!

ccw998

It doesn't has fire, only the "pop" sound.

Mahjik

iTrader: (1)

If the pre-cat is removed (using a downpipe) and you don't have a programmable ECU like the PowerFC, Haltech or something else... you'll get some backfiring.

rotorbrain

or you can get backfiring from leaky injectors and a bad FPD. haha. i almost burned my car up on the way home one day. i feel lucky and i havent even had it for a year.

paul

turbogarrett

iTrader: (1)

my car would backfire nicely between shifts (flames and all) with pettit streetport and stock ecu. with the pettit unlimited the car won't backfire nearly as much(i kinda miss the flames!)