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      08-09-2018, 06:31 AM   #29
aps
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Drives: 2018 M3 ZCP
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Quote:
Originally Posted by 52172 View Post
Why not run a catted high flow downpipe? Small loss in power and can still have all 4 sensors ready? Plus pass the sniffer in states that put sensor up the tailpipe?
Price difference. Not to mention all catted DPs are not created equal. I had a challenge HFC and it threw a CEL in the first week. There's only one or two companies that guarantee no CEL and the price of those DPs is why people have been trying to find a solution for catless.
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