2.7 with stock leistritz vs Dansk sport

[frederik]

Now the question is, where does the Classic muffler fit in? From comparing the Dansk and Classic, and reading your description, I believe the Classic is close to Leistritz, but I've never driven a 911 with a Leistritz muffler unfortunately. I fully agree with your description of the Dansk, and the Classic is way more melodious, quieter at low revs, yet somehow more aggressive than the Dansk at high revs.

[Kaleid]

Somewhat related to this topic bit where do folks stand on heat exchangers?

[glaverbel911]

Somewhat related to this topic bit where do folks stand on heat exchangers?

The factory exchanger, the Dansk or SSI all perform equal.
But I don’t recommend stepping up headers or exchangers. larger primary tube diameters generally have a negative effect on torque and most of the hp curve other than at peak.
Cheers.

[carrera39]

Very interesting thread