View Single Post
      04-29-2021, 03:33 PM   #13
Coupes33
Major
374
Rep
1,392
Posts

Drives: 2006 335i, 2017 Audi S3
Join Date: Aug 2013
Location: Brisbane, QLD, Australia

iTrader: (0)

Quote:
Originally Posted by Aus335iguy View Post
I can certainly understand why a bigger exhaust post turbine would be beneficial. It's all about pressure difference after all. The bigger the difference pre and post turbine the more torque you create on the turbo shaft and the more air the compressor can move.....

If you've got a link to the video where they mention the rods I'd like to learn more ?
Yes I will do that if I can find it again. Looking at that graph that I attached to the previous post, in my case, my car on 100% E85 produced 553whp on a Dyno Dynamic dyno which is approx 650 hp at the crank. From that graph, I should have a twin 3" exhaust. As the reference book is from the US, the crank hp numbers in the graph are probably Dynojet numbers which makes running an OEM exhaust even worse. The OEM exhaust is less than 2.5" so is only good for less than 500hp at the crank.
Appreciate 0