I  stumbled across    Garrett  turbo site,  and   they have a  tech section that explains   A/R,  Trim,   well,  anything  dealing with  a  turbocharger,    it's   there.  

 

http://www.turbobygarrett.com/turbobygarrett/terminology

 

Lots of  different  pages  to explore too,  regarding   basic theory all the way up to system  efficiency..  

 

 

found this one  particularly    informative   http://www.turbobygarrett.com/turbobygarrett/choosing_turbo

Edited August 17, 201410 yr by rancherman

Thanks for the links!

This is the kind of stuff I enjoy reading and figuring out 

Saved it all on my computer and dropbox too 

Edited August 18, 201410 yr by bjytech