dyoung14
Is getting worn out
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Super 60 is a T3 compressor, 60-1 is a T4.
The T-3/4 is actually the size of the center section. The ATS turbo is a Hybrid with T3 exhaust and a T4 compressor.
My 60-1 works real well, but the cam and other engine mods feed it also. almost 2 lbs of boost down lower than with the original ats.
The 60-1 is still small for these engines. I'd be looking at a T66, it should work very nicely, not overly huge on the inducer with a nice big exducer, and it's well inside it's efficency map for 20 psi, so, it should spool nice and quick, no surging. A T04R might also be a decent choice, I'll take a look at a map after work.