Hello everyone I'm looking for some help with an issue I'm having with my 00 Tj it's a 4.0 standard 5 speed I have the cold air,cat back and hypertech's power programmer. When I start my jeep up (cold) it sounds like it's got a cam from hell in it after about 5 to 10 seconds it smooths right out . It will not do this if the engine is warm . And it was doing this before the install of list above . I believe it's getting to much fuel at start up . Can anyone give me some advise or help on this .