Superchargers for 2003 M45

[MIG_45]

I was curious has anyone seen any supercharges for an 03 M45 or aftermarket engine parts to improve horse power

[Double E]

In short...no.
There is essentially nothing that has been done like that to these Y34s. Damned shame.

[infinitedrift]

I've seen them. I forget his name but he has a supercharger in his q45 (same motor) . Maybe if you Google it they'll pop up. He has two of them.

[szh]

Yes, there was indeed a company that made a supercharger for the Q45 with the same engine from that era (so might have fitted in the 2003 M45 too), but it ceased to do business pretty early on, unfortunately.

Here is a post on that: 2002-2003-q45-supercharger-pictures-t12199.html

Z