Newbie Here Needs Major Help!!!!!
Hello everyone, Im new here and Im just havin sum slight problems.... first off I have an 02 Wrx with a stock 2.0 my mods include; IHI VF34, Injen FMICand BOV, Manual Boost controller, Utec, AEM CAI, 3in Turbo back exhaust ( no cats), DC Sports Up, DC Sports Header, NGK plugs( one colder), STi pinks, and Walbro 255lph
My problem is recently when my car is under full load my car starts to backfire greatly at 4-5000rpms, thus I must shift really early. I have not thrown any CELs, I changed my plugs, checked my coil packs and wires, to no avail..... Does anyone have an idea as to what my problem may be??? If you need any more information just ask....Thanks alot guys.. and Im glad to be a member!!!