Has anyone tried using a Garrett .57 turbine housing on their cossy's turbo?.
I'm running 1 on my BB T4 and compared to the previous .63 jobbie
there's a bit of a difference.
Back pressure compred to the .63 though?
Thoughts?.

 

how much boost/rpm you running?
what difference is there when boost cuts in and max boost reached?
have you had it dynoed before and after?

 

the only 57 i have ever seen was fitted to the small turbo escorts, alot of turbo remanufactures often usi this, open it out and make hybrids out of them. e.g MD240 did this