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