Quote:
Originally Posted by Jonas225
The 125i and 130i here in Europe never got the N53 motor. They had the N52 until production end. Also the 125i has the 3 stage manifold which makes it easy to upgrade it to an 130i.
For maximum power output you should use the 330i software of an E92/93 with N52 motor. The N52 in the 330i has 272HP, but it was built from september 2006 to september 2007 only. They are very rare here. In september 2007 we got N53.
dwsavenko If you like you can PM me your VIN and I will have a look, if the 128i and the 330i have the same base version. Finding the power class byte shouldn't be to hard.
I think i also found the power class byte for the N53, but as i have a N54 i can not test it.
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I have an n53 (325i) and would love to test it if you could send instructions on where it is.