That is what I have. HJS is the manufacturer of the cats Fabspeed uses. I did not want to hijack the thread so I merely mentioned HJS....
Quote:
Originally Posted by Cali convertible
No cel either with Fabspeed x-pipe high flow cats, on for one month.
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1987 Buick Grand National, 2009 BMW E90 M3, 2016 Audi S6, 2018 MB E63S AMG, currently in 2021 M5 Competition