As part of our weight loss program we have gone for a Axle Back RPi exhaust, so the Z4M should sound a lot louder like the animal it is. Plus apparently there will be a few wHp power gain too!
First impressions, its very well made and a quality piece of kit..
For now we have done a static noise test on the OEM exhaust so we can compare once this new one is fitted:
Cant wait for pre & post video clips!
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