Quote:
Originally Posted by mrvco
My county requires emissions testing, so the AFE SI, 3-Stage Manifold, Evolve Tune and Supersprint headers seems to be my best bet.
However I'm curious whether the new AA headers w/ their tune is a viable alternative. I know the price is lower, but its not clear whether the performance is equivalent to the SS / Evolve combo.
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Active Autowerke posted a 128i with their AA headers/disa manifold, and AA tune, and it did 249whp. Inflated numbers because it is a Dynojet, but that's really high regardless.
You pay a premium for the SuperSprint headers, and to some it's worth it. I can absolutely understand wanting the best, but I don't think there are any performance benefits to be had by going with SuperSprint over Active Autowerke. Just my .02