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Shifteck off road mid pipe...no CEL with O2 spacer kit

galaxy

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I think this certainly warrants a good conversation. I know here’s guys on here with a lot of good knowledge on exhaust that could add some great points. From what little I know, this seems like a great option for ditching cats, which can arguably free up as much power as long tubes with a much simpler installation and at a significantly lower price point. Curious how critical a tune is with ditching cats with stock headers. I have no doubts long tubes do significant things for sound, but removing cats even with stock headers is still going to make a significant sound/volume change.

I knew these were coming when I got my x-pipe from them.
 
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Mjc1241

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Looks like it makes as much horsepower without a tune and the O2 spacers as headers which require a tune. With a tune it may be possible that these pipes can make even more. Only a Dyno will tell but a great option if they indeed do not trip a CEL with the O2 spacers.
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