Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Straight Through Exhaust Performance

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Old Jun 16, 2020 | 08:31 PM
  #1  
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Straight Through Exhaust Performance

Hi NAM,

I've been toying with the idea of deleting the battery box, get a pc680 and then have muffler shop weld a muffler for a straight through set-up. Does the straight exhaust add performance? Will it be too loud or will it be similar to most aftermarket exhausts? Car is not a daily, just a weekend and track car, but I don't want to ruin it by an exhaust that's too loud.

Thanks,
 
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Old Jun 17, 2020 | 07:23 PM
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It will depend on the muffler choice. Personally, I've tried a Borla Turbo and I couldn't stand it. My Dynomax VT valve was rattling and I got tired of that annoying thing.

I'm currently running a Varex muffler, best of both worlds. If you close the valve, it's close to stock and when you open it, it's loud, but not Borla loud.
 
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Old Jun 17, 2020 | 07:46 PM
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I wouldn't advise as it will be REALLY LOUD.

And many tracks now actually have noise restrictions and I even run a muffler on my track car, and still can't run at some local tracks.
 
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Old Jun 21, 2020 | 04:23 PM
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Originally Posted by WayMotorWorks
I wouldn't advise as it will be REALLY LOUD.

And many tracks now actually have noise restrictions and I even run a muffler on my track car, and still can't run at some local tracks.
Thanks Way. I guess I’ll just go with one ball for now.
 
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