someone more brushed up on the technical side of this like 71dsp will probably tell you that backpressure has nothing to do with torque, if that's what you're going for. i still don't know what backpressure is good for, but there you have it. the evo's not even a "loud" muffler, but it's more free flowing than stock, as it should be.<font face="Verdana, Arial" size="2">Originally posted by c.J.s:
Does the greddy evo lose back pressure?</font>
<font face="Verdana, Arial" size="2">Originally posted by soniclude:
someone more brushed up on the technical side of this like 71dsp will probably tell you that backpressure has nothing to do with torque, if that's what you're going for. i still don't know what backpressure is good for, but there you have it. the evo's not even a "loud" muffler, but it's more free flowing than stock, as it should be.
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