Quote:
Originally Posted by m5james
Has it been dyno proven that the 4.8 mufflers make any increase in horsepower at all?
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Purely my speculation, but I can only assume there is slightly better flow between the N62 4.4 and 4.8 exhaust systems. It would be interesting to know what performance improvements, if any, it has, but I just personally love the sound of it...and looks.