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I have a 2014 435i Xdrive, have been running a CTS Turbo CAI for a couple months great sound and no CEL! I'am thinking of doing the Fabspeed hi flow cat DP as well as the ER Charge pipe + boost pipe. I want to do a FMIC as well not sure whether to go for the ER, Wagner or Active Autowerke. As far as Exhaust I'm Thinking of either Dinan or Agency Power just not sure if it will fit the Xdrive models, I emailed them and they said they do not know as they have not fit tested they're exhaust system on any xdrive vehicles. Then finally a JB4 !
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