Help needed please
The car runs fine when I am on the gas and cruising down the road, but at idle the engine will idle very smooth and sometimes it will idle rough. Now this is the really weird thing...when I turn on my headlights, it idles even rougher. Would my mods (Lid, MAF ends, Whisper Ram-air, cat-back) cause this to happen or do I got some sort of electrical problem?

