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Thanks Scotty thats a start.. Didnt know it was BB or ceramic.. though what about compressor/turbine diameter ED/ID? A/R? etc?

I am trying to work out the efficiency of the turbo at the boost i am running.. :)

cheers.

Not too good I'm guessing, especially if you are running higher boost than stock.

I can measure the inducer/ exducer diameters tonight if you need them but it will only give you a theoretical best case efficiency

fantastic info mate. thank you. in reading up on turbo efficiency i found this very handy calculator.. thought id share the link. it uses the efficiency charts from the manufacturer and then overlays your cars map on top of it.

http://www.squirrelpf.com/turbocalc/

Twin turbo M35 would be pretty sweet. One in stock position, the other in place of rear muffler. STS turbo system I believe its called.

Sure the pipework would be long (from exhaust muffler back to intercooler) but the lag wouldnt be too bad.

Costs $2000USD for the universal setup - http://ststurbo.com/inc/iview/1900?idx=2&p=412

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