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blue00gt · 01-18-2001, 06:28 PM

Generally (unless you have a serious motor) an offroad h-pipe is worth about 2-3 hp over a cat pipe from what I have read. Sound quality is the main difference.

01-18-2001, 06:28 PM	#2
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	Generally (unless you have a serious motor) an offroad h-pipe is worth about 2-3 hp over a cat pipe from what I have read. Sound quality is the main difference.