the truck runs fine at idle and cruising. But as soon as you get on any kind of load or higher boost(7-9psi) it just falls on its face kind of like I’m hitting a rev limiter and it’s just sit there an every 2 seconds or so it will kick in,
On the scanner it shows both o2s running fine(800-900) until higher rpms then bank 1 drops to 15-20 “showing” that it’s runing lean but I know a misfire will also show the same thing, bank 2 stays steady. Any advice would be great

already switched coils from bank 1 to 2
changed spark plugs tr6 @.30


twin 65mm turbos
65lb Fast injectors
walbro 450

 

If you have a tuner you should be able to pinpoint what cylinders and go from there.

Swap plug wires around, swap injectors. Make sure fuel pressure is staying at 58psi.

I never like to trust narrow bands at WOT, a wideband is always going to be more accurate to see exactly what is going on.

Post the tune and logs if you want.

 

I’m this info is coming from my tuner, he said he was using wideband,
I’ve put new 60lb injectors, and wires 3 different times
Fuel pressure is holding @65
and I’ve even swapped the coils from bank 1 to 2.
Thing is it’s like I’m loosing the whole side.
Does a band ground make any sense? I might try that