I am just wondering what is the most and still being efficient amount of boost you can run with a Holset Super 40. One more question, does anyone know the size of the compressor wheel in this turbo? Thanks for your input.

 

Anyone got and ideas??

 

I've read 35-38 for the hx40. Dunno about the super40.

The Rip @ Source Automotive sells these and might be able to help
http://www.sourceautomotive.biz/hotrod_40.htm

 

Keep it below 40, 38 is even better.

 

Thanks for the info, any body know about the compressor size on the super 40?

 

i think it is a 60mm