Originally Posted by topcat87
Clarence, I hate to burst your bubble but the 320i and 328i share the same piston, at least in the USA. The article sites info source by BMW NA.
so basically in summary the only thing limiting the 320i from putting out 300hp is the ecu
Actually one doesn't really need that article. If you go to the website of BMW NA, the Specification of 320i Sedan clearly states that the compression ratio of 320i is 10:1.
However, if you look at the Spec of 320i xDrive, you'll be surprised to find that the compression ratio of 320i xDrive is 11:1.
So, could this be some kind of error, or BMW NA is taking a completely different approach from those in rest of the world?