I thought the difference between an F30 328i loaner I had and my 335i was quite large. However, I assumed that the N54 and N55 were similar because that's what BMW wants us to believe...
Originally Posted by Jamesonsviggen
Your definition of MUCH more poweful and mine must be different
10-15% which is the difference between the two cars regarding power at the wheels. That power difference is completely erased with a $380 tune. If it was such a power difference it would take a hell of a lot more than that.
Both cars are separated by about 5 tenths and 3-4 mph in the 1/4 mile. That is noticeable. But let's not exaggerate.
The difference between the N52 and N55 prior to '12 was quite a bit larger.
Freude am Fahren