Quote:
Originally Posted by Blip Bavarian
marketing. There's no way it adds 30 hp.
Its insulting that they even put those numbers out there.
might as well be marketing a glass pack for Pep Boys.
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I had a straight exhaust(no-mufflers) for racing on my Cooper S and without an upgraded exhaust manifold it produced 19hp. That was on a 1.6L supercharged 200whp car, when I went to a rotrex charger, upgraded cylinder head, and custom exhaust manifold, it had a 20hp increase over my Magnaflow exhaust, which over stock has a 12hp increase. So a muffled FULL exhaust system on a 420hp V8, producing 30hp should be cake.