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      12-06-2019, 07:19 AM   #33
spool twice
Rainbow Racer
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Drives: BMW M4cs
Join Date: Sep 2010
Location: Tampa Bay, FL Area

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2019 M4cs  [0.00]
Quote:
Originally Posted by ntg44 View Post
Primary cats, yes.

Secondary cats have been replaced with Magnaflow 14156 resonators. If I were to do it again, I'd probably find something a little larger that could fit in the space. The Magnaflows are fine for stock exhaust, but the equal length has a little more snarl in the midrange that maybe larger resonators could fix.

Ideally, I would have liked a resonator after the merge, but with such a quiet muffler, I don't even think it would help. Luckily you can barely hear it in my V2 compared to V1.
Thanks, comparing mine to yours and to other members, it seems like all of you have eliminated some, if not all, of the cats. I'm going to try and eliminate my secondary cats, I think that's the piece I'm missing.
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Prior Car:'14 Audi S5 3.0t DSG [ APR ECU/TCU | Pullies + basic bolt-on mods | 10.861@127.90mph ]
Current Car: F82 M4cs | TT-RS | On Order: i4 M50
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