turbocharger or supercharger (is it possible?) for a 330i

I know they have been supercharged a lot. Don’t know about turbos tho.

Superchargers are used much more frequently for m54’s, there are a couple turbo kits out there but the cost is quite a bit more

Superchargers are cheaper, and if you buy a kit, come with the tune thats proven.

There are a couple companies that make them for the e46. There’s ESS that makes a Twin Screw and Active Autowerke that makes a Centrifugal. Google search those for pros and cons of each.

There is an awesome turbo kit for the ZHP by technique Tunning but it should be compatible to a base 330i

A small turbo is used for low rpms and a bigger one for higher rpms as they take longer to spoil and they’re not reading available at low rpms. Super chargers on the other hand give you more power in the lower rpms and give good power in the highs. Granted turbos are more efficient when tuned properly, a supercharger takes power to make power since its pulley based and not on exhaust

I’m looking to supercharge my 330i. The ess kit is around 5k for me not sure where I can find a cheaper one

Its a bit hard
because most of the turbos and superchargers dont fit

Why not spend the cash upgrading to an M3? You’ll end up with about the same performance as an M3 supercharging or a basic turbo kit but the rest of the M3’s driveline is far superior to a regular E46. If you’re going to add 50% more power to a 330i you’ll struggle with the rear end, the auto, the brakes and suspension.

Active Autowerkes Supercharger