Ok sorry for my ignorance im new to the whole power adder stuff but would it be possible to somehow mount a pully onto the cool part of a turbo, not the side that attatches to the exhaust, and create boost? or will it not spin enough to make the turbo spool fast enough Sorry if this is a really dumb question

 

what your describing is a centrefugal supercharger, if your asking if you can mod a turbo like that then the answer is pretty much no...

http://auto.howstuffworks.com/turbo.htm

 

 

The problem you run into is that turbo compressor wheels are designed to be efficient at very high rpm’s, in a lot of cases >100,000rpm. Second, the only bearings that work well at those rpms like the full floating sleeves used in most turbos do not tolerate _any_ side load and any belt drive or gear box would put a significant one on the shaft to get anywhere near that rpm.

Early centrifugal blower designs got around this by starting with a compressor side MUCH larger then you would normally choose, spinning it at as high an rpm as possible and just living with the fact that they were in a very inefficient range for that wheel/diffuser design (and were usually limited to something in the 2-5psi boost range). Modern designs instead redesign the parts to be optimized for the available rpm, of course to get them easily the only real choice is to buy those specific parts.