there is nothing wrong with the pt88,they are a great turbo when installed properly and with the correct accessories.We have installed several of these with no issues.

things i have seen wrong

wrong turbine housing-over speeds the turbo
bov wrong size,wrong spring or not functioning properly
not enough oil to turbo
too much oil to turbo
inadequate turbo oil drain
center cartriage at wrong angle for oil to drain properly
contaminated oil
turbo coked up from shutting off after hard pull-this happens on the dyno alot

 

Pt 88 47 would be nice too

 

how much oil is it suppose to get???

 

i was told a 4an unrestricted with a 10an drain
mine never smoked that way.
also i switched to the ls6 ported oil pump, not sure if that helped or not

 

That's how I have mine setup also. It did smoke some when I ran the 5w-30 mobil 1 oil. Switched to 10w40 delvac and no smoke since.

 

I had one that that locked up with less than 10 miles on it. Sent it back to Jose for repair, had to pay out of my pocket because precision said it was out of warranty. Never made over 10 lbs of boost with it, -4 feed and -10 drain.