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jcm3 · 08-13-2017, 10:59 AM

Only one set of cats on each downpipe. Try longer o2 sensor spacers first...other than that the only option is stock Downpipes. Software won't set the readiness correctly.

08-13-2017, 10:59 AM	#31
jcm3 First Lieutenant 83 Rep 323 Posts Drives: F85 X5M, 07 911 TT Join Date: Apr 2013 Location: Skokie, IL iTrader: (1)	Only one set of cats on each downpipe. Try longer o2 sensor spacers first...other than that the only option is stock Downpipes. Software won't set the readiness correctly.
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