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off-roaad h-pipes and x-pipes

2909 Views 2 Replies 2 Participants Last post by  Black00GT
I have heard that putting on a x or h-pipe without cats is a bad idea for a modular engine if you mod it alot. is this true.
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Never heard that? Only the MIL can be a pain to overcome :(
yeah i dealt with that on my V6 stang
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