Swap N52b25 with N52b30

[Matt.rowley.1990]

OK, I did the swap from 2.5 to 3.0.... I didn't do any remapping or update anything.
The engine works fine, no miss fire nothing upnormal. The power is better and the performance as well, but I feel the engine can deliver more.
Mine was with plastic black cover, and the engine I got with the silver Magnesium cover, I was so happy to keep the cover but the harness does not look nice so I kept the plastic cover and it was good chance to change the gasket...

Sounds like you’ve picked up an early N52. Nothing inherently wrong with this other than the fact that some of the components will be older than your car. Great to hear you’ve since had it mapped and setup correctly.