
Originally Posted by
JoshDub
Is it really the same performance? What is the drivetrain loss difference between the two?
That's a tough question to answer with data, but everyone says the ZF is very efficient. I guess we could use APR's data. Although not rock solid, it should give a decent indication of any major differences in drivetrain losses.
Looking at the SQ5 vs B8.5 S4 dynos from APR... The SQ makes more at the wheels than the S4 at both stage 1 and stage 2. They also have data for the C7 A6 3.0T, which uses the 8 speed ZF, and there's only a 3whp difference compared to the S4, both with Stage 1.
The above would indicate that any difference is negligible, but again it's a super small sample size.
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