Bye Bye Borla, Hello Brombacher - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Oldcarguy · 02-13-2018, 02:33 PM

Well, I think I owe an apology to Borla. Pulled my Borla exhaust today in prep for the Brombacher install, did my whack test again with the Borla suspended several different ways free standing and . . . no vibrations, solid as a rock. Hmmm, back under the car and I discovered the vibration appears to be from the heat shield immediately in back of and above the Borla’s right can location. Oops, too bad the Brombacher is already on order (not

)

Anyway, because the Borla seems a-ok I’ll put it up for sale at some point. It’s a drone king at any rate and I’ll recommend to anyone who purchases it to at least weld in the crossover pipe in an attempt to quell the drone. If I had more time, I’d experiment myself just for grins but the to-do list is stacking up with spring on the horizon (kart prep for the 2018 season, visitors, etc.). Here’s a pic I snapped today:

More to come when the Brombacher arrives. Until then I’ll just keep watching the YouTube vids.

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10/10ths · 02-13-2018, 03:57 PM

...I bought some Circuit Weeks secondary cat delete pipes from an inmate here and they, combined with the FVD muffler are street exhaust heaven.

The secondary cat delete made the exhaust QUIETER inside, yet LOUDER outside, and completely eliminated the drone. There was still a very faint drone with the FVD. It is now completely eliminated.

BUT, when you get on the throttle, it sounds awesome.

Cunningr · 02-15-2018, 12:03 AM

Quote:

Originally Posted by 10/10ths

...I bought some Circuit Weeks secondary cat delete pipes from an inmate here and they, combined with the FVD muffler are street exhaust heaven.

The secondary cat delete made the exhaust QUIETER inside, yet LOUDER outside, and completely eliminated the drone. There was still a very faint drone with the FVD. It is now completely eliminated.

BUT, when you get on the throttle, it sounds awesome.

Can you post a sound clip inside and outside? There is another thread about the cat delete and I have been considering this setup.

10/10ths · 02-15-2018, 04:09 PM

...sorry.

Good luck.