Quote:
Originally Posted by shift@red
My 2004 e46 m3 had the full Supersprint race exhaust. Headers, race cats, x pipe and race exhaust (all $~7K of it) and it def made a difference. Although, I dont have experience with the euro system, but just that fact that the cats were moved downstream prbably helped a lot. Im sure it wouldnt be near the effect the SS system had though.
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I had the same exhaust on my E46 M3, it was worth 25 rwhp on the car. My car made 277rwhp stock, than it made 302rwhp with just the SS headers, race cats and xpipe no resonator but with Borla cans. What seemed to be mainly improved was low end torque along with the midrange. The car didn't even have software.
Here's the youtube of my old E46 M3.
http://www.youtube.com/watch?v=_xf8gxlCaCU
I didn't want to really get involved with the E46 vs. E92 M3...but the E46 did do somethings better than the E92. I think the steering was better, especially at low speeds but the V8 in the E92 M3 is really a jem. The lighter E46 M3 did seem more tossble than the E92 M3 and it seemed to push less as well. Than again I remember the car with the Eibach Prokit springs and sways along with the larger RAC Monolite RG4s along with the wider rubber, I'm sure that had alot to do with it.
Dave