and they're only $65 shipped for a magnaflow cat
no engines need backpressure, its a myth, its all about flow vs. velocity, same idea with porting heads, the idea is to have no backpressure at all but a balance between flow and velocity for what your trying to achieve
no engines need backpressure, its a myth, its all about flow vs. velocity, same idea with porting heads, the idea is to have no backpressure at all but a balance between flow and velocity for what your trying to achieve
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