[ajw45]

Originally Posted by gferil

Looks a bit similar to my dyno results:

http://www.zpost.com/forums/showthread.php?t=713140

Read the description in the first post for what I got from Sal at Evolve. Hopefully later this month I'll be able to get the "after Evolve tune" dyno done.

Interesting. I'll dyno again with the tune and see if that sorts that the rich problem. FWIW, we also did one run without an air filter and there was pretty much no difference in power.

Also, here's a comparison dyno of my e28 M5 (no cats, fresh engine build) run a few years ago on the same dyno. Interesting how the S38 had a little more max torque but way peakier torque curve to the S54.