[joft6]

Indeed a mess of an engine, especially the 2013 models.

[JimVR4]

Originally Posted by Cross1681

Sounds like you have my commute. You in FL?

Nope, I'm in CA. After a spirited run and that cruise home the beast still blows the fans with the grill open for a few minutes. I'm thinking about changing out the air filters with BMC

[BobsM3Coupe]

Originally Posted by Cross1681

The top tier version of the N63TU3 is quite impressive. It produces a staggering 523 horsepower and 553 torque. Notice, this is the same torque output as the impressive S63 M engines.

The reason the S63 engine with the ZF 8HP76 is limited to only 553 lb. ft. of torque is because BMW is to frugal to use the stronger ZF 8HP95 trans like the Trackhawk uses. BMW uses it in the RR models.
Then they could allow the torque to go up to 664 lb. ft. which I'm sure the S63 is capable of obtaining.

[Cross1681]

Originally Posted by BobsM3Coupe

The reason the S63 engine with the ZF 8HP76 is limited to only 553 lb. ft. of torque is because BMW is to frugal to use the stronger ZF 8HP95 trans like the Trackhawk uses. BMW uses it in the RR models.
Then they could allow the torque to go up to 664 lb. ft. which I'm sure the S63 is capable of obtaining.

Same reason we are all rated to tow 7,200 lbs almost irregardless of the Engine output. Tranny is the limitation.