LB7 DSP5 with SAC45s, LBZ reg, Built Trans

Lennydmaxguy

Just another diesel tech
Nov 8, 2023
125
65
28
Somewhere, USA :)
Hey guys, thought I'd share my DSP tune with everyone. I appreciate the forum and the help I've gotten the short while I've been here, and I want to give something back.

This tune is based somewhat loosely on a few files I've downloaded from here, especially Dave's tune he posted in a recent thread. The truck it's from is the 01 federal LB7 in my signature. The most substantial mods to the truck are LDS SAC45 injectors, a Superstock CP3 with LBZ regulator, and built transmission. Otherwise, I think VATS is off, intake heater is off, maybe other details I'm not thinking of just now. The truck does have a 64 mm turbo as well, although being an LB7, there isn't really boost controls in the ECM.

I don't really have power level estimates, but I would say level 5 does close to 600 HP, maybe more. So, in other words, not even remotely stock trans safe. You could maybe run levels 1-3 in a stock trans truck and be ok, though. Level 1 is detuned from stock, to make the truck more maneuverable at parking lot speeds.

If anyone has suggestions on improvements that could be made, I'm all ears. I'm not looking to make more power with my truck, though. It's still on 265s on stock 16s, so power transfer is a problem already. ;) There's definitely more potential in a set of SAC 45s, tho, if your truck is set up for it.
 

Attachments

  • LB7_DSP5_SAC45_LBZ_reg.zip
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asemaster

New member
Dec 12, 2017
3
0
1
Could somebody help me out and modify this for Sac 30% nozzles. Or give me some pointers on how to do it. 2004 Lb7 sac30 nozzles, headstuds and stock trans.
 

Lennydmaxguy

Just another diesel tech
Nov 8, 2023
125
65
28
Somewhere, USA :)
Unless you have plans to upgrade your transmission very soon, I wouldn't bother using any of the power levels from this tune. You could try copying the stock level pulsewidth table to your truck and see how it runs. 30% and 45% aren't a huge difference
 

asemaster

New member
Dec 12, 2017
3
0
1
Unless you have plans to upgrade your transmission very soon, I wouldn't bother using any of the power levels from this tune. You could try copying the stock level pulsewidth table to your truck and see how it runs. 30% and 45% aren't a huge difference
Thank you