New to forum
Hello all. I joined this forum become better informed about how to further improve the power made by the Ford Racing/ Whipple HO kit for the 2007 Mustang 4.6 (140AX). Considering shorty headers, X-pipe, and after market mufflers, perhaps an 1/8" smaller pulley. I'm trying to stay away from a custom tune if possible. Any and all input welcome.
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