Hello, I installed a 76mm T4 .96ar ceramic ball bearing turbo on my silverado 2 weeks ago. The tune is still fairly stock, changed dod, no cats, kept 4 o2 sensors, have wide band PLX and vacuum/boost, did install a sheet metal manifold on her and using the stock MAF. Engine internals and sensors are all stock. The turbo empty's into a 3 inch tapering into a 4 inch pipe, it runs about 4 feet with 4 inch and tapers back to the stock 3 inch exhaust and tail pipe.
The truck runs great starting and cruising around, even gets a bit better mileage.
Problem it's a bit doggy when you put your foot in it, I attached the log file and tune for inspection, any help will be appreciated.