Quote:
Originally Posted by richard in NC
I'm also considering the Dinan tune for my M550i.
Does the exhaust ad much to the power or is it mostly for sound? If I end up and prefer the sound of a competitive exhaust A/C Snitzer, etc), would that be a problem with the tune?
Not to get off topic, but how much stiffer is the suspension upgrade?
And would going non RFT PS4S offset that? I've got the Goodyear F1 RFT.
I don't want to lose the good ride of the stock M550i but want it a bit tighter on sporting drives and on track.
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Exhaust is namely for sound. Contributed a bit of power at the extreme top end but nothing that will be meaningful in the grand scheme of things. We are talking about a 500+HP car to being with. Another exhaust as long as it is not removing the CAT's will work fine with the tune as well.
Suspensions are about 10-15% stiffer than stock. Feels a bit more then that just because of the lowering element involved as well but the spring rate itself is about 10-15% stiffer.