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SN-95 and New Edge Mustangs
'01 GT having problems with catted x-pipe
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<blockquote data-quote="Darren5.0L" data-source="post: 14667107" data-attributes="member: 31098"><p>A basic setup like that should be rock solid, and while there might me some HP that could be gained from a custom tune, it really shouldn't be necessary.</p><p></p><p>I have done 4 complete exhaust systems installs on 99-04 Mustangs and for each one we used a Magnaflow Catted Midpipe, this was simply because they are a manufacturer of OEM grade replacement cats and they work properly. We never had an issue from Magnaflow like what you are describing.</p><p></p><p>My experience is that BBK and other similar companies do tend to have a lower quality part, not that all of their parts are bad, but I think cats may not be a good place to cheap out. I was going to suggest running an off-road X-pipe, but I noticed you have an SLP LM1 exhaust, and while it sounds glorious, I imagine it would be very loud to deal with day-in-day out.</p><p></p><p>Unless you want to keep trying the "parts shotgun" I think you might have to get it checked with a wideband, however the PCM should throw codes if one back is markedly richer than the other. It might just a matter of BBK cats are letting you down, but without further diagnostic it is hard to be sure.</p></blockquote><p></p>
[QUOTE="Darren5.0L, post: 14667107, member: 31098"] A basic setup like that should be rock solid, and while there might me some HP that could be gained from a custom tune, it really shouldn't be necessary. I have done 4 complete exhaust systems installs on 99-04 Mustangs and for each one we used a Magnaflow Catted Midpipe, this was simply because they are a manufacturer of OEM grade replacement cats and they work properly. We never had an issue from Magnaflow like what you are describing. My experience is that BBK and other similar companies do tend to have a lower quality part, not that all of their parts are bad, but I think cats may not be a good place to cheap out. I was going to suggest running an off-road X-pipe, but I noticed you have an SLP LM1 exhaust, and while it sounds glorious, I imagine it would be very loud to deal with day-in-day out. Unless you want to keep trying the "parts shotgun" I think you might have to get it checked with a wideband, however the PCM should throw codes if one back is markedly richer than the other. It might just a matter of BBK cats are letting you down, but without further diagnostic it is hard to be sure. [/QUOTE]
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'01 GT having problems with catted x-pipe
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