First off, the fitment was perfect and installation was easy. It started up right away with no codes or gremlins. Idled even better than before.

Low end is similar to stock, however you can really feel it open up as the RMP’s rise. I felt a significant difference at WOT in the straights. However, I was most impressed with the throttle response while exiting turns.

I romped on the car for a few good hours and never had a single hiccup, blip, engine code, etc…

Unfortunately I cannot compare any previous times with the E30 on this particular track, but I can say my tires were losing grip around turns that were similar to the last track event on the E30 which gripped very well. This tells me that my entry speeds are higher than before due to the added power. I’m very happy, but this means it is time to go back to an R-comp since I’ve reached my threshold!

I had my hood popped and a few E46 M3 owners in my group came over to ask what I had. They assumed I had an S5x based on the lap times and my exhaust note.