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      02-28-2018, 05:34 AM   #46
f87CSdrifterential
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Drives: 2020 M2 CS
Join Date: Apr 2015
Location: NH

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Quote:
Originally Posted by PhillyfaanM3 View Post
If you decide to go non-catted, I'm sure you'll see greater flow. What that translates into HP and tqe I couldn't say(over your current set up).

I went catted for a few reasons; I live in a state where removing CATS carries a huge fine, I was hoping to see an increase in performance (which I did notice, but perhaps not as much had I gone sans CATS) and finally I was hoping to avoid the CEL (would only occur 1-2x a month).

I was happy w the results & not sure I or my neighbors would've been ok w the additional loudness of a non catted non resonated car...lol.

Good luck.

Good info, thank you. I doubt I would see any huge increase and it seems like a waste of time until I do a turbo upgrade. A lot of the non pure kits seem to include a special downpipe anyways.
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