Good Evening,
I recently motor swapped a 6.2L out of my 2007 Yukon XL that had DOD with a 6L80E Transmission AWD. It was replaced with a 6.0l, with VVTI deleted, chevy hot cam added, factory muffler replaced with a magnaflow, and exhaust straight pipe from Catalytic Converter out to muffler then exit.
I have an older MPVI Tuner and have everything set up. I am looking for help tuning the truck.
It will not start easily, it stumbles extremely bad. I can get it to start by turning it over multiple times and it finally catches, or I can bleed the fuel rail manually while someone is cranking it and it will start. After that it runs fairly well, but the transmission shifts hard going into higher gears and then shifting down.
Could someone help get me started with this? It would be greatly appreciated.
Posted the Info Log below.