Ace Muffler : 4 into 1 Header
 

We decide to make a 4 into 1 header to test if it improve from our 4-2-1. And the 4 into 1 ready make good power overall. Because the engine ECU did not tuned, so we test up to 6800RPM, and engine still goes very strong.

My 4-2-1 header: http://www.ft86club.com/forums/showthread.php?t=50211


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Very nice work! Quick compare to the original 4-1 it looks like the original might have a better overall curve, but it's really hard to tell especially when both are untuned (correct me if I'm wrong on the tuning part). I would think the 4-1 design would have a better top end, but so many factors come into play. Workmanship looks excellent, any chance you could capture some video of how it sounds? Keep up the good work and let us know when you want to start selling :)


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