Are you using the straight pipe or cat currently? With the cat, it shouldn't make much diff at all, the restriction from the cells and when it necks back down, it's about 1/8th in all around. The XYZ outlet uses 3” OD tubing with a 0.062” thickness or 1.52mm.
My Tanabe pipe is 1.2mm thick or .047". That tells me the difference is .23622" or 6mm.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
Last edited by SS_Firehawk; 03-02-2013 at 06:35 PM.
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