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I have the VRSF 200 cell downpipe and when I first got it I had a CEL within a few miles. I got the stainless 90 degree spacer and it went off for about 200 miles, but came back on saying it was too lean. I got a small straight one for a few bucks and it's been off since (about 16 months and 10,000 miles).
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2017 BMW M240i xDrive - Mission Performance Stage 2 and transmission flash, CSF Intercooler, VRSF 4.5" downpipe, Dinan midpipe, BMW M Performance muffler, Agency Power Cold Air Intake. 11.58 @ 116MPH
Last edited by greg21040; 03-28-2019 at 05:19 PM..
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