Quote:
Originally Posted by 1990 415
my 415 and my brother's 415 were both built by Marc Haibeck. We removed the mufflers to really wake them up and ran straight pipe through the X-pipe and produced 585rwhp and 500 rwtq (SAE). With the mufflers present the power was 579 rwhp and 491 rwtq (SAE).
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Post em up. I'd be interested in the torque curve as well as the location of Peak Power. New thread, maybe?
Todd