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  1. gmduramax

    Time for injectors stock or 30 overs?

    I haven’t had any tuned trucks fail yet, but that’s with the correct vin, OS, calibration. Even after august. But this is on emissions equipped trucks of course.
  2. gmduramax

    Time for injectors stock or 30 overs?

    You don’t know what they actually check, I live in California.
  3. gmduramax

    Time for injectors stock or 30 overs?

    You should do at least 60% injectors, your tuner can make it work
  4. gmduramax

    Broken Crankshaft Count?

    That might work. I tried to get L5P heads on an LLY short block but you would need longer studs and all kinds of custom. But if you were to put all LBZ top end I don’t think it would be much trouble. I think doing an entire L5P swap would be better that way you benefit from better flowing...
  5. gmduramax

    Propel Diesel HPR? Never heard of it.

    Propel is good. With a full tank you need more fuel to make the same power. I would mix 50/50 and it would get better mileage and less smoke, same power. That is with 250% injectors I doubt anyone would notice a difference with stock injectors. The R95 at 76 is basically the same results
  6. gmduramax

    Anyone tested cams?

    When I built my motor I didn’t change air or fuel. Drop to 16.5:1 comp and did a SoCal 6460 cam I believe. I think I noticed more bottom end but nothing I could test. At the very least I would have the exhaust side of the heads ported, and do a tow cam from wherever there’s not a magical cam...
  7. gmduramax

    07.5 LMM Electrical Issue

    If for some reason the connection gets interrupted at the obd II I have seen all the gauges go dead on the dash
  8. gmduramax

    07.5 LMM Electrical Issue

    Do you have anything plugged into the obd II
  9. gmduramax

    Struggle bus. EFI Live only will communicate with T87, not E86B.

    You cannot read that ecm, open the tune and flash it
  10. gmduramax

    Over fueling

    You need heat to spool the turbo, that can be done without smoke
  11. gmduramax

    Brett Deutsch runs his first 7 sec pass in "The Mistress" 69 C10 Duramax powered truck! Technical thread for the true gearheads!

    Hey Mark just curious but do you think running less boost would lower egt? On the intake side compressing the air to that boost level is creating 500° of extra heat. On the exhaust side since drive pressure is higher than boost would you also be seeing an added 500° or more of heat just from...
  12. gmduramax

    Shudder in 6th gear

    Converter clutch doesn’t sound happy
  13. gmduramax

    No acceleration issue in lly duramax

    Check your fuel rail pressure and scan for codes
  14. gmduramax

    LBZ Preventive Maintenance

    Transgo jr with mike L springs
  15. gmduramax

    Over fueling

    In a perfect world you would run less than 2000 uS anything over that you’re injecting fuel outside of the bowl and creating cylinder pressure when the rod to crank angle isn’t as efficient
  16. gmduramax

    Over fueling

    they’re talking 2900 uS at the highest point of of their fuel pressure and MM3 so full throttle. Usually with injectors the pulse table doesn’t need to be modified other than the max pulse width
  17. gmduramax

    Over fueling

    Take this with a grain of salt because I’m not as experienced with tuning. But throw 2 degrees of timing in your spooling area. See how it reacts, listen to the motor. In my understanding you can run more timing with larger injectors and not increase cylinder pressure because you’re using less...
  18. gmduramax

    Over fueling

    What are you doing with timing? Are you using a timing calculator?
  19. gmduramax

    Brett Deutsch runs his first 7 sec pass in "The Mistress" 69 C10 Duramax powered truck! Technical thread for the true gearheads!

    But Wade was doing this 10 years ago, he invented the glow plug, and helped develop the first ever injector. 🤣🤣 I couldn’t help myself after seeing that Facebook post. But seriously thank you for sharing.
  20. gmduramax

    Stroker pump vs dual pumps

    Well now I feel ghetto for driving around with belt squeak because I was worried about reliability 🤣
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