04 sierra.tunSo the 5.3 in my sig hydrolocked and I swapped in a
6.0
ls1 heads
219/230 606/605 114+4
with all the bolt ones from the 5.3 plus a walbro
I can flash a new tune in and it seems to run decent for a few miles but it is cutting out and today started going lean like injectors are not opening. pegged my wideband lean and would barely idle. checked for fuel pressure at the rail and it was good. no gauge but plenty pressure. I got to the side of the road and killed it and started it back and started fine and about 2 seconds later lean. Well I flashed my same tune back over it with vats disabled to see if that would help and it made it 25 min drive and only had one miss and it was not bad at all. in the morning on the way to work I expect it to go back to missing tho. so can someone please look over it and see what yall think. And it is setup in ve mode. Thanks