Guys, I can say from experience that the German HJS high flow 200 cell cats included in my Fabspeed exhaust DO NOT CODE. I have zero codes. Please do not say that all high flow cats code. This is false.
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1987 Buick Grand National, 2009 BMW E90 M3, 2016 Audi S6, 2018 MB E63S AMG, currently in 2021 M5 Competition
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