rx slim

I'm installing a Pettit Unlimited ECU that I just bought a little while ago from a forum member. I never thought to ask if his car was auto, or 5 speed. Mine is a 5 speed. . .will it matter if his computer is for an auto? How can I tell?

Mahjik

iTrader: (1)

Pettit doesn't do auto ECU's.

rx slim

Awesome. .. thanks for the quick reply Majhik. I'm worried for nothing.

Back to work I go!!

rx slim

WOoooooooooooooo! ECU is in . . .and the car is running like a bat out of hell!! Big difference. I was having some backfiring issues (some pretty violent) with my mods, and the stock ECU. Now the car just runs. . .really runs. One great purchase!!

victorFD

iTrader: (1)

Mmmmmmmmmm, noobie question; Shouldn't you have more backfiring with the pettit than with the stock ECU because the mix is now richer??

WaLieN

Yeah, it wouldn't make sense that the stock ECU used to run richer than the Pettit.

rx slim

Just stating the facts.

rx slim

Any of the real Guru's want to chime in on how this fixes the backfiring? Before I bought the ECU, I found numerous threads of people having the same trouble before getting and ECU tuned for the bolt on upgrades.

Just wondering why. . .

WaLieN

Well, it also depends on how many mods you have on it as well. What kinda mods do you have?

rx slim

Pettit intake, large smic, full exhaust, koyo radiator, magnecore 10.5 plug wires, greddy bov, pretty much all the bolt-ons.

I didn't have as much of a backfire problem until the smic. . .that's when it got pretty bad. . .ecu fixed 'er right up.