LB7: Power lose and sputtering when up to temp and flooring it

[Clappeddirtybaggin511-LB7]

Got a 2003 GMC Sierra 2500hd with the lb7 511xxxkm and I’ve been having this problem for a while now and I’m stumped on what could be causing it once in a while when I clear the codes the truck smartens right up and going like a bat out of hell but no codes show up? I clear it tho as if there is but no code appears...
Okay so I have a 220hp edge juice with additude chip in the truck and PPE ported inlet fittings for the fuel rail and PPE fuel pressure relief delete FASS 150 and FASS low pressure filter housing delete AFE cold air intake and3” MBRP down pipe with 4” ATS straight pipe, I have a buggered FPR and I’m wondering if that’s all that’s causing my problems? Just seeing if anyone could help me out

 

[torqued2dmax]

How many sets of injectors and how many FPRs have bin put in truck in 500,000 ? How many mi on last ones ?

 

[Clappeddirtybaggin511-LB7]

The injectors were done last at 400xxx and FPR I’m not to sure when it was done last I pulled the cp3 out of my 01 lb7 thinking it was weak hoping it was the problem but here the FPR was buggered in my 01

 

[SoCalMike]

Try taking the edge tuner out and see if it does it.

 

[TheBac]

Are you absolutely sure there werent any codes? Id be willing to bet youve got trans codes....

 

[Clappeddirtybaggin511-LB7]

0 trans codes, and it’s a 5 stage chip I usually have it on 3 for driving and it don’t do it but when I wanna mess around a little I throw it on 5 and that’s when it does it?

 

[TheBac]

Sounds like you're limping it.

 

[SoCalMike]

Sounds like you're limping it.

I agree

 

[Clappeddirtybaggin511-LB7]

Sounds like you're limping it.

What do you mean “limping it” it’s not in limp mode ??

 

[TheBac]

Limping the transmission. Not to be mean, but you sound like someone who doesnt realize the risks of running +100hp on a stock trans.

The clutches will eventually start to slip, usually starting with 5th gear. Thats what it sounds like to me.

 

[Clappeddirtybaggin511-LB7]

Limping the transmission. Not to be mean, but you sound like someone who doesnt realize the risks of running +100hp on a stock trans.

The clutches will eventually start to slip, usually starting with 5th gear. Thats what it sounds like to me.

Well shit that’s good to know would of never thought tranny slip would cause a truck to lose power....

 

[TheBac]

Fix the other issues you've got first, like the FPR, on the outside chance that's it. But Im putting my money on a hurt trans.

 

[Clappeddirtybaggin511-LB7]

Fix the other issues you've got first, like the FPR, on the outside chance that's it. But Im putting my money on a hurt trans.

I’ll giver a try and I’ll post back on here probably will be in two weeks or so but I’ll forsure put an update on here. Thanks

 

[Clappeddirtybaggin511-LB7]

Okay so I changed the FPR and the truck does the same thing still I ported my inlet fittings and truck still hiccups it’s not a shortage of fuel cause it has fass150 1/2 feed line pressure relief value delete or what ever you wanna call it ported inlet fittings for fuel rails and she still hiccups cold air intake ported turbo horn I’m honestly stumped on this guys

 

[Burn Down]

Did you pull the edge off and run it yet?

 

[Clappeddirtybaggin511-LB7]

I did not but I actually am removing it so cause I I’ll be going with dsp5 efi live because it has the LBZ FPR in her now

 

[Clappeddirtybaggin511-LB7]

Great news so I ditched the edge and went with EFI Live DSP5 with Mitch cooper tunes and day and night difference truck is retarded now