Originally Posted by IancoleTX
And would therefore be ineligible for this swap?
Which models came with this engine?
The N51 has a 3-stage intake manifold already so there's nothing to swap. It's internals are different from the N52 so 330 software will not work. You can get software specific to that engine. Go to www.realoem.com
and enter in the last 7 of your VIN and it will tell you what engine you have.