Quote:
Originally Posted by gferil
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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.