i have a 95 m3....ive been starting to look more seriously to get one or the other in a few months. what i want to know is what is recommended between supercharger or turbo. as far as performance, reliability, maintenance, etc. ive been looking and the superchargers are cheaper, but i dont want to just get that because they are cheaper. any help or input is appreciated. thanks

Safety is in the tuning... IMHO.

Boris

Essential reading:

<a href="http://www.superchargersonline.com/content.asp?ID=19">Turbo VS Superchargers</a>

and

<a href="http://www.superchargersonline.com/content.asp?id=5">Roots VS TwinScrew VS Centrifugal superchargers</a>

Players in the BMW space:

Superchargers:
----> vortech based: {Dinan, RMS, ESS}
----> rotex based: {AA}

Turbo: {AA, TT}

And, I agree with Boris - tuning is the key!

-Dave

Safety is in the tuning... IMHO.

Boris

I also agree.