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Hey Fast,
Did you ever figure this out? I have done the same in adding a turbo, LT4 high side but now need to upgrade me low side. IF you know and are willing to share the best mthode for dealing...

That is aswome and helps a ton. Thanks for this :worship:

Hey guys, I am hoping someone has the LT$ injector data, I cant seam to find it anywhere?
Thanks for your time.

I have read LT4 injectors and LT4 pump will help even if I use the same cam. Any advice on that?

It seems to be out of fuel at relatively low rpm though, I figured that would only happen nearing WOT
I posted the log above

Hey Guys,
I have a 2014 Sierra with a 5.3 and 72mm turbo with about 8PSI, cast pistons, and crank.
I am having trouble with the fuel rail pressure never really getting to the "Desired pressure",...

I set the config to track misfires as suggested in the all cylinders and found that #5 is the issue. I have swapped out the plugs and wires but that didnt help. I am going to swap the coil with one...

Considering the injectors are buried under the intake manifold this sounds like a great Idea. I have added all the injectors individually to HP scanner and it shows they are all getting power. I have...

Ok thanks for the advice RySmDPT14, I reflashed it and see what happens tomorrow. Any thoughts on the injector pulse disappearing under WOT?

Hey Guys, I have read quite a bit on this forum and wanted to say thanks to all those who give advice.
I keep getting a P1101 code at WOT and more importantly a stumble that shakes the truck bad. It...

Any tuners interested in taking this on?

I will definetly go with your suggestion about the injectors but at this point i would like to get the truck to run half decient. At the moment it bucks and spits if i tromp on it at all, i think...

Thanks for your reply 1slow1500 and for the tip about the lt4 HPFP and injectors I thought the upgrade was 5k and needed a new cam.
I installed an On3 70mm turbo kit ...

I have a 5.3L direct injected 2014 GMC Sierra that i installed a turbo in and need help tuning it. I took it to a tunner originally who but a base tune in it and since then bought the tuning school...