Berk HFC have worked well for me, had them on for well over a year now and they did come with a brace tab, no issues other than the occasional SES light when I am driving long distances at a consistent speed, 50+ miles of highway.
I installed mine first when my stock CBE was on and they even gave a lot deeper sound, definitely no complaints and am happy with my purchase, fitment was spot on to stock and when I installed the FI exhaust they were sturdy and didnt look too bad for a year old Cat in the Chicago weather and even fit well onto the FI.
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2012 370z 7AT- ES2 with PSS, K&N Drop-ins, LED's all around, Berk HFC, FI CBE non-res, KW V1's
2003 A4 5MT- The Beater
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