04-22-2013, 01:43 PM
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#1 (permalink)
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A True Z Fanatic
Join Date: Oct 2011
Location: Tampa
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Drives: 13' Magma Red Nismo
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Quote:
Originally Posted by MyKindaGuise
It would probably lose power at that point. That's too much flow and not enough back pressure. I actually just redid my exhaust FP. its up in the MA thread. No hiss on mine and no obnoxious rasp on decel. Just longtube headers and stock muffler delete.
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Relieving back-pressure will always increase power, but at the expense of low end. The power loss being felt is most likely the loss in velocity of the exhaust gasses at low rpm. The returns in top end of course diminish the larger you go. Hence why dual 2.5" recommended, 2.75 max on a NA car, heck maybe even on supercharged Z's too.
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