13.30s with super low rail press!

[03-GMC]

have you replaced your fpr or modded it? it looks cranky.. too high when you command low and too low when you command high.

Yes just put in a LBZ reg

 

[paint94979]

Looks good to me... you're holding 22,000-23,000psi.

 

[03-GMC]

Looks good to me... you're holding 22,000-23,000psi.

Yeah oh a big tune it only holds around 20K and its getting around 2900 pulse

 

[paint94979]

Yeah oh a big tune it only holds around 20K and its getting around 2900 pulse

Hmmm i just looked at an old log of my truck with a 3300pw tune and LBZ Regulator my truck held 22,000psi+ and it would spike up to 25,000psi.

 

[dmaxfireman]

you might need to adjust b1015 desired flow vs current.

thats the lbz table # not sure if its the same for lb7

 

[03-GMC]

Hmmm i just looked at an old log of my truck with a 3300pw tune and LBZ Regulator my truck held 22,000psi+ and it would spike up to 25,000psi.

Man just think what I could do with 3300 pulse. Yeah something is wrong now I need to track it down.

 

[03-GMC]

So when I commanded to the 180MPA the number 8 injector balance rate went way negative. Should that be anything to worry about?

 

[Redbowties88]

Man just think what I could do with 3300 pulse. Yeah something is wrong now I need to track it down.

also remember 3300pw on an lly is signifiantly less then the same pulse on an lb7:cool2:

 

[03-GMC]

also remember 3300pw on an lly is signifiantly less then the same pulse on an lb7:cool2:

Yeah I forgot about that

 

[Smokin LB7]

also remember 3300pw on an lly is signifiantly less then the same pulse on an lb7:cool2:

Never knew that...how come?

 

[03-GMC]

Never knew that...how come?

LB7 have larger injectors (stock), not sure on how much bigger though

 

[Smokin LB7]

LB7 have larger injectors (stock), not sure on how much bigger though

Hmmmm, thats cool. Didnt expect to learn that today

 

[Redbowties88]

LB7 have larger injectors (stock), not sure on how much bigger though

something like 8-10% IIRC.... 3000pw tune on an lb7 is very close to a 3300pw tune on an LLY


Edit: 7%

 

[paint94979]

LB7 injectors are 7% larger than LLY injectors

 

[03-GMC]

Wait, the LB7 injectors are 7% larger than a LLY, the number just came to me. :rofl:

 

[TrentNell]

you might need to adjust b1015 desired flow vs current.

thats the lbz table # not sure if its the same for lb7

The table needs to be different at idle ranges but it will no effect rail pressure at WOT .

Just a FYI my truck with a LBZ reg would hold 21.5-22.5 k with a 3250 pulse when i had stock sticks and stock pump .

 

[03-GMC]

The table needs to be different at idle ranges but it will no effect rail pressure at WOT .

Just a FYI my truck with a LBZ reg would hold 21.5-22.5 k with a 3250 pulse when i had stock sticks and stock pump .

And mine dips down to 19 k on 2900 pw