Dam Epa! Will My Car Ever Be The Same

[perks33]

About 6 months ago I got done by the f@*ken EPA, -all mods had to come off to past the tests. I have put all mods back on and my car aint the way it was??

Mods include: front mout cooler, adjustable fuel pressure reg, exhaust (now with a cat converter) T boost controller, and an air pod filter.

Once everything (adjustable except fuel pressure reg) was back on i noticed it wasn't idling properly. I was told to get a new o2 sensor- but it didn't fix the problem.

I then put the fuel pres reg on- result= not boosting or spooling right (feels like something is holding it back), and serious stalling (every time in neutral) ALOT WORSE Still drive it occasionally, if i dont boost it, its tollerable BUT soon as I put my foot down, its f*@ked.

Do i need to reset the stock computer so it can remap??? OR

I dont remember where boost or fuel pressure settings were exactly at (mate borrowed them and changed them)

SO does it just need a good tune??? OR

Now theres are cat converter in the exhaust- would that make a difference???

Please help cause its so frustrating, dam EPA!, its like I spent around $2000 to get my car running worse then it originally was arghhhh

[Silver_GT]

i thought i saw a pea shooter exhaust on your car haha, guess who. quite possibly the fpr not being set right giving you issues, reset the comp, check for vacuume/boost leaks and take it to a tuner and get ur afr's checked out, tuning while on the dyno is gonna give you the best results, and the tuner there can probly spot any problems. Shit idle sounds like a vac leak usually, specially if its after u changed stuff.

[Luke_GTS-T]

perks i think ur problem is tightening the o2 sensor to take it out.. haha.

But seriously, can anyone help out?

[Messiah]

the cats not going to be the cause. Work methodically.

First reset your ecu, i take it its a stocker. If not then a retune is the way to go.

next up look at the fuel pressure reg, you might need to reset the ecu after each adjustment (not sure).

You havnt modded enough to really have complex issues, and the only thing thats really variable in your set up is the ecu's learned maps... your pressure reg and your boost.

define fcked on boost. are you slamming your head into the dash?? or is it just doing bugger all.

If your getting boost, wind down the bleed valve and start with modest boost levels to get an ok base line

Edited March 13, 2009 by Messiah

[W0rp3D]

How big is the cat, a standard 2.5" or a high flow 3 inch?

[jeffworld2]

put your factory fuel reg back on if you still have the factory computer. everything else will work fine ifr you installed it all correctly

[deva]

i have same issue, was told fix some vacuum leak, and also i got no plumb back- which has to be put in.

[Kinks]

sounds like a vacuum leak to me. check your AFM is plugged in properly too.