hpi apollo
Posts: 2639
Joined: 5/13/2006 From: Georgetown,
KY, USA Status: offline
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hinder performance as opposed to a normal side exhaust pipe, the way the exhaust header enters the pipe is at a 90 degree angle so the energy cannot be used as efficiently, sure they will make a small increase over stock, but this could also be to using very long pressure line which provides slightly less presure and runs a tiny bit leaner (more power) i have heard some people say this that ahve the pipes, dont remember who though
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