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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269

Thanks for the correction. Can you share a link to where a dual 930 muffler has a resonance issue.

I was aware that the normally asperated has such an issue but had not heard of a single turbo having such an issue.

I agree about the turbo muffler exit on the right being the best for a performance muffler.

I have a lot of respect for Borla except for possably the weight. Would not expect a significant HP bump with a switch to an alternate muffler but that is just a guess.

On the other hand I switched from a B&B style muffler to a straight through right exit muffler and picked up 30hp on the dyno on a 360whp K27/7200 turbo'd car.
Old 07-16-2010, 08:05 AM
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