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10 HP increase on a NA car just by changing a muffler? Its a rather generous claim i'd say. Either that or the mechanics must have optimised everything in that car so that 10HP is achieved. And that NA car must be at least 400HP too.As it is, straight flow mufflers struggle to make 10HP, what more with a S flow one.
10 HP increase on a NA car just by changing a muffler? Its a rather generous claim i'd say. Either that or the mechanics must have optimised everything in that car so that 10HP is achieved. And that NA car must be at least 400HP too.
As it is, straight flow mufflers struggle to make 10HP, what more with a S flow one.