Quote:
Originally Posted by grimlock
I wonder why there hasn't been more info on the 'S55' engine.
How does it differ from the N54 introduced 7.5 years ago?
Just the addition of valvetronic II, that differentriated the F10 M5 from the 550i for about a year?
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1) different internals
2) bespoke and incredibly robust cooling system (7 heat exchangers / oil coolers and new liquid to air intercooling system, completely different than n54/55 and blows it away)
3) larger turbos
4) new tuning algorithms aiding in keeping the turbos spooled even when off throttle
Very different, and IMO very awesome. The fanboys will see and will open their eyes to this car once its released and they have the chance to drive it.