The world's most powerful automatic N54 / 335i - 632 wheel horsepower
Great results here from BimmerBoost member Ak335i whose E90 335i with a Precision 6466 single turbo upgrade put down an impressive 632 wheel horsepower on a Dynojet in SAE correction. This is an automatic car and you may be asking, why is that relevant? Well, because the overall horsepower record for the N54 platform is held by a manual transmission car and is ~100 wheel horsepower higher than this figure
. Unfortunately, there are no solid options to upgrade the automatic transmission on the platform.
If (when) an upgrade solution comes out the automatic cars will likely reign supreme in acceleration contests due to consistency and being able to load the drivetrain to build boost (such as when staging on the drag strip). This vehicle could put out more power but breaking the transmission without a solid option to upgrade it would just be an exercise in futility. Not to mention a waste of money.
Congratulations to @Ak335i
and hopefully we will see these automatic figures rise soon. The Dynograph and video are below.