okay i put a 60mm jeep tb on my car and ported out the stock intake, now when i hit the studder box. it back fires and pops flames out the exzhaust. is that good or bad?

Do you have a wideband? Take a look at your AFR.

My guess since you added the Jeep TB and ported the intake plenum opening, that the increase in airflow is making you run richer. I don't have this experience, but I wouldn't think this mod alone would all of a sudden cause backfiring. You probably need a better tune.

I'm sure some others should be able to chime in here and help out.


http://www.dsmregistry.com/detail.php?carid=1185

Too much gas.... Get it tuned :thumbsup

That's not stutterbox, it's ANTI-LAG! LOL.

Too much fuel, bud.

no i dont have wideband will have one soon, but it does drive and run fine, just does it with launch control under boost. thanks for the help. i will go and see if i can fix it a little