I agree, power gains on an NA car just plain suck. Unless it's a 302ci or higher engine =) Even then if you were to put FI on a V8 you'd get the huge gain from freeing exhaust like a smaller FI engine.Originally posted by gryphon
1. You really don't know that... I'm tempted to call BS as well, but you never know:
a) how restrictive the existing system is
b) how well the stock ECU learns
2. Is that dyno proven?
It is very possible that this could happen. The WRX ECU is notoriously paranoid, and for good reason. I know very little about the internals of the S2000 so I cannot speak for it. I DOUBT that it is a 35rwhp from stock peak to stock+catback peak. Maybe possible at the biggest difference, but I still doubt it.
I got tire of spending $1,000's on an NA engine just to gain 2-8hp at a time.
Peak HP doesnt make that much of a difference, if I got 30+ whp from an exhaust I'd want that tasty gain spread nicely all over my power band. I want to be faster at 3000rpm, rather than dead till 5500, in a road race the other car would be gone while you're waiting for power. 30hp worth in your mid range, while not losing anything up top is where it's at. You want a nice and flat, table top torque "curve".