01 Cobra with 3k miles on it. I have the normal problems (engine knock when cold, 5th gear drive train clunk when off then on throttle, exhaust resonance at 90mph, hard 1st to 2nd gear shift when cold, etc.) Don't have pinging yet although i think California cars are detuned beacause of emmisions. Here's my other problems. Engine idles about 650-750 rpm and vary rough and shakes car. 800 rpm and it smoothes out. Also if i drive with windows up and outside air fan on interior of car smells and it gives me a headache. If heater or Air cond is on it's okay. Anybody got these 2 problems?
