no im sorry i cant recommend anyone but maybe BBS. hes the only other one i know of with the hpd pipe,,,,but i dont know what he had before to compare it to. so hopefully he will contribute.

how much bigger is the HPD pipe in diameter compared to the stock pipe?

i have heard good HP gains with just the white bros. slip on with stock pipe.


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I went from the stock pipe to the HPD, so all I can tell you is the difference in peformance from that. But, you already know the performance gains of the HPD pipe. Give HPD a call and see what they say