Quote:
Originally Posted by cosmos515
Why do we see up to 20hp REAR wheels on aftermarket headers for the s85? The s65 is just like an s85, just smaller.
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You make a great point.
Headers is one of the best power mods for the E60 M5.
Steve Dinan already stated in the stroker kit video, the M3 V8 is basically the S85 with two cylinders cut off.
RDsport has to be working on headers, as well as others.