Quote:
Originally Posted by e90pilot
The N51 is also available in the US spec cars according to the site but I don't know which cars have them.
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N51 = SULEV spec. Mainly in California and some other tree-hugging states. I ordered mine specifically without the emissions bullsh*t. N52 ULEV all the way. I'm really curious as to the viability of this mod (along with an ECU flash) to make a 328i into a 330i. I know the 325i works but haven't gotten a
solid comfirmation about the 328i's.