Quote:
Originally Posted by DJCarbine
My ark testpipe stays at 2.5 inch and uses a different donut gasket than stock FWIW
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I've noticed that on mine too. But it's getting switched out with the P&L catted front pipe which is 2.5 all the way thru and uses a gasket instead of a donut. I'm switching because I'm going catless on the header.