I know this is mainly an audi forum - but I also knew that the Subject line would raise some eyebrows. I have a customer that brings his audis to me. He also has a Ferrari testarossa that he has had me do minor things to from time to time. He drives this thing like an old lady going to sunday school. When I changed the oil recently I 'had' to drive it to make sure everything is ok. When I drove it I was very, very surprised because I don't think it would outrun my bone stock 98 Honda accord!? What is up with this? The car is supposed to make 380hp - I don't think it is putting out 100? I thought maybe I wasn't driving it hard enough, but I got it up to about 6k (redline is like 7k) rpm in first and still didn't feel any power. It Starts, revs and idles great, no noises, smoke, etc. It has duel CIS just like on the older audis/Mercedes. It is an 86 so there really is no CEL. I told him it has something wrong power wise and he agreed. I checked the plugs and wires and they seem good, car only has 22k miles. I guess my question is this - What is simple to check on a CIS system that would cause a major power loss but still runs fairly well? Or, what else should I look at? Thanks in advance.