I forgot about this thread, but i guess i can reply now. No i have never raced one in my car, but in a stock srt4 i have and they still are slow. I have a friend that owns one(which is now has the greddy twin turbo kit). Oh, it is also manual(so i better be scared now that its fast since it has a manual tranny). For a stock n/a car to keep up with a turbocharged car, did you forget that have 2 more cylinders and are 3.0L compared to our 2.0L 4 cylinder. Could that be why they keep up, you tell me. I got plenty of friends that know about nissan's and for them to have a TT kit added and still be slow, not worth it. No credit here, it doesnt deserve credit, you must only know people with slow cars b/c to give that credit is retarded. Not trying to starg a battle, just stating my opinion.