I (in my '89 GTUs w/ 150k miles, mods in sig) raced my friend in his s4 base (with removed AC and spare) with jspec engine and tranny. He has 2.5 inch pipe (no cats) from turbo to y-pipe, then the HKS 60 mm cat-back. His car boosts about 9 psi max or so.



Anyway, I raced him, and by 90 mph or so, he only had 3 or so carlenths. Why didn't he completely kill me? I really would have expected him to win by more than that. So either his car isn't running right (he has 95 psi compression at 1 mile high, while I have 100), or my car is really fast https://www.nopistons.com/forums/pub...DIR#>/wink.png. It just surprised me that it was that close, I was expecting him to hit boost and just fly away, but that's not what happened. I dunno though, it does feel pretty damn strong when I'm in it, so maybe my car is just faster than I thought.



What about you guys? Any of you turbo guys ever raced an N/A, or vice versa?

sweet, so you did pretty well, not to bad. add some more mods and you should be able to cut it to 2 car lengths. keep up the good work, and nice to see your not wasting your gas on hondas

I raced a NA with a few mods, dont know all the mods. But he happened to have alot of stickers on it.. it was pretty clean car. Looked nice, just too many stickers. Anyways, this is when my TII was BONE stock. I raced him and only put about 2 cars on him untill about 60mph. Then a cop pulled him over .. lol.. felt kinda bad for the guy. :(

only 20 hp difference...

stock yes, but with his mods he should be at about 210-220. With mine I'd be lucky to get 170.