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That noise you heard this morning was probably my JCW’s cold start after installing the Racing Dynamics high-flow catted downpipe and Remus race exhaust. Insane.
Did you need a tune or any CEL with the aftermarket exhaust? I have a 23' on order and am weary because I have yet to see tuning availability for it.
Can’t imagine an exhaust causing a CEL. My high flow cat intermittently causes the CEL though. Usually not though if I allow a good warm up.
Almost impossible to verify fitment for 2022 and forward. However, I did successfully install a Remus exhaust fitment certified only to 2019 with no problems at all.
Almost same with the downpipe. The only thing was I had to cut off a mounting bracket. Turns out it really isn’t needed because the pipe solidly mounts to the turbo with no movement.