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  1. M

    Need help with lift pump sump, nowhere to install

    The L5p has a cooler.
  2. M

    Need help with lift pump sump, nowhere to install

    It goes from the lift pump to the hpfp, then gets pressurized from to about 5000 psi at idle to 25000 psi at higher power settings, you can bet it does heat up, how much I don't know. Don't most duramax trucks have a fuel cooler? I do know that on Boeing airplanes, the hydraulic fluid only...
  3. M

    Need help with lift pump sump, nowhere to install

    Think about it for a minute. With a sump you will have a lot less room for the fuel to move around in. Less likely to slosh out, and rapidly refilled when the fuel sloshes back to the other side. This would only be a concern when close to empty. And when moving at a stable rate, it's the same as...
  4. M

    Industrial Injection Screw-in injector cups

    Installed, if they are not marked differently how would you know? Look at the pictures again.
  5. M

    Industrial Injection Screw-in injector cups

    Better mark those some kind of way, or the next mechanic trying to replace a cup, might make a mess trying to get it out.
  6. M

    Did LML def and complete EGR delete new radiator and Intercooler and still overheating

    I would guess then that your fueling is off some. In your tune, if it has overheated enough times I would also suspect head gaskets. Someone else asked earlier about the bypass line for egr cooler, you did add one and not just block it off correct?
  7. M

    Did LML def and complete EGR delete new radiator and Intercooler and still overheating

    Did you have the tune for just the dpf delete, then later delete your egr? Or did you do them all at same time?
  8. M

    Can I get a custom tune for an H&S Tuner?

    There may be someone north of our border that still does tuning. Finding them may be tough.
  9. M

    Did LML def and complete EGR delete new radiator and Intercooler and still overheating

    Is it possible the tune is for a non egr deleted truck, then the tune may be causing it to run without enough or to much fuel?
  10. M

    LB7: SAC-style Injector Life

    More fuel without more air =higher egt's a possibly more smoke.
  11. M

    New Rig - 2022 3500HD Denali on this Friday!

    Good, you can put 500 or so miles in to help the rear end set good before towing heavy.
  12. M

    Wildcats

    I forget cause I don't have one, but does the 300 blackout fit the 5.56 or the .308 lowers? If it's the 5.56, then a 300 blackout magnum for the .308 might be the thing.
  13. M

    My first chevy

    Straight pipe, and tune out 2 cylinders.
  14. M

    Advise on this

    Find some stops and weld them back.
  15. M

    02 lb7 into 01 burban 2500

    You will need to use your harness. From the lb7. Modifications will need to be made. Never done the swap, but a few on here and other forums have. I've seen it recommended to use same year model for swap as it's easier.
  16. M

    Don't know where to go

    Do you have a scanner that will show desired vs actual fuel rail pressure. Make sure your lift pump is actually working. If it is it could be you high pressure pump. It could also be your fuel pressure regulator sticking open, then as it sits slowly closing.
  17. M

    2023 Duramax?

    It normally is stiff just before the Cummins.
  18. M

    21’ l5p 5500 cab and chassis speed limit and stabilitrack

    What would the speed rating on those tires be?
  19. M

    reductant quality test

    You will probably need the MP808. You need one that does bidirectional testing. Research it very good first. https://autelscanners.blogspot.com/2020/06/autel-ds808-vs-mp808-vs-mk808.html
  20. M

    Hot trans

    Get an infrared thermometer and make sure the sender is right. Had a problem on friends boat where it showed it was over heating, but when I put my thermometer on it it showed close to thermostat readings, changed gauge and no more overheating.
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