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  1. kidturbo

    VGT compounds

    Those use a different way of controlling vanes don't they... The Engine Control Module modulates the supply pressure to the turbocharger pneumatic control cylinder (actuator) which acts on a rod and yoke system to slide the nozzle ring and blades relative to the fixed shroud plate. One could...
  2. kidturbo

    Broken Crankshaft Count?

    Yeah it was a stock cam engine. Rods, 15.5:1cr pistons, and ATI damper for those keeping track. Boat has a Arneson surface drive connected to a 6sp Allison without a converter. Been working out some bugs with the shifting speeds, but nothing strange to speak of happened. Have plenty of video...
  3. kidturbo

    Broken Crankshaft Count?

    Mark down the first one known to break in a boat... Buddy Dave verified his LMM crank is broken today. I swore he had an electrical misfire issue by the way it just started missing. Nope, it's broke near the damper somewhere. Is a compound motor with under 10hrs since build. Probably was making...
  4. kidturbo

    VGT compounds

    Personally I'm interested in doing 2 in parallel setup like this on the right. The Banks engine on left uses a supercharger to spool up bigger twins down low. Which is cool, but i think a pair of VNT's could remove need for the charger. They don't have to be factory setups either. My MB...
  5. kidturbo

    VGT compounds

    I brought this up once before somewhere. Maybe here a while back. Now I'm actually in a position ready to move on it in a real world project. So also seeking some serious advice on sizing, but in true parallel twins rather than compounded. The electronics are actually the easiest part. Control...
  6. kidturbo

    LMM: GM's Conflicting MAP PIDs

    Thanks for the help Dave. Tested your cax file changes on a DSP5 OS and all seems well. :thumb: I set a MAP scale to 5v = 1000 and the Map2 pid output values are golden. Max 998kpa and 130psi corrected boost readings on my display. N2k marine displays will only read to 145psi, so close...
  7. kidturbo

    LMM: GM's Conflicting MAP PIDs

    They could do it in like 30 seconds if they choose too.. Adding the .cax file manually is not a big deal. However you have to open and re-save your tunes, then rewrite DSP5's cause it didn't show up in that modifed OS when I tested last night. I've got one done to bench test to verify it...
  8. kidturbo

    LMM: GM's Conflicting MAP PIDs

    Solved I found a LMM OS raw bin to hack around on now. Then Brayden sent over a cax file yesterday and saved me the trouble. Anyone need LMM MAP scaling? :thumb:
  9. kidturbo

    HS GMLAN Gateway

    Received a .cax file from Brayden yesterday to calibrate LMM OS to a 5bar or 10bar MAP sensor. This also adjusts the GM.MAP2 PID output to match as I suspected. Should work with Edge CTS also.. I love technology... :hail2::hail2::hail2: https://youtu.be/9qVf33ps_6E
  10. kidturbo

    Medium Duty CAN bus Protocol

    For those interested, here is the result of some lengthy reverse engineering. http://www.duramaxdiesels.com/forum/showpost.php?p=991387&postcount=23 Now back to the BCM hack.
  11. kidturbo

    HS GMLAN Gateway

    Done Ok finally reached the end of this marathon. Think we've got a pretty cool setup. Here is a screenshot of one possible layout on a Lowrance display. Some stuff like getting the "true full scale" boost reading about kicked my butt. All because GM does not use an SAE PID, or even a...
  12. kidturbo

    6 Speed Valve Body Question

    Yeah that's it. My GM tech buddy said the last dealership he worked at had to take all the MD trucks to an Allison dealer any time they needed a new TCM or reflash. However he did flash one OS from MD to LD using a Tech2 for a member here. Would be good to know if you can go the other way using...
  13. kidturbo

    6 Speed Valve Body Question

    That's basically what he has set right now to lock out 6th. But the big deal with this boat has a surface piercing prop setup. It may cavitate at high speed, then hook up again. Which looks about like breaking the tires lose at 80 mph in the eyes of the TCM.. Was just thinking maybe the med...
  14. kidturbo

    6 Speed Valve Body Question

    With some onsite tuning help from Nate@PPE, the boats trans is holding 5th now. However with only the A mode pattern available, it's still hunting 3/4 at low speeds when on and off the throttle in rough water. So looks like a BCM with switch for tow haul and manual mode is on the list. He has...
  15. kidturbo

    LMM: GM's Conflicting MAP PIDs

    Any suggestions on who would have a 52628594.bin ?? Being an older non-top-secret OS I would think someone will come off one. I'll put a couple code gurus on picking up where the EFIlive guys left off at. I have an LBZ and LMM ECM in front of me, but lack the correct tool to pull a raw bin file.
  16. kidturbo

    LMM: GM's Conflicting MAP PIDs

    Started out on what seemed like a simple endeavor few weeks ago. Needed to re-scale the MAP sensor slope values using EFIlive on some LMM ECM's so CANbus will report up to 50lbs of boost. Similar to the LLY 5bar MAP mod demonstrated on here many moons ago. Looks highly unlikely anyone has...
  17. kidturbo

    LLY: MAf delete

    I tried it both ways, damaged 2 MAF sensors within a couple months some time back. Getting all the tables correct was a pain "in my setup.." Ended up putting it back in the stack along with the rich lean controller mod. That worked great cause I could clean it up or smoke it out with simple...
  18. kidturbo

    loping after fass 95 install and injectors

    X2 on the 10psi cap... However I never knew that about the LBZ and 14psi without issue. Learned something new today. Must be that diff regulator design. I successfully ran 12-15psi on the LLY boat engine after remapping the reg curve a bit, and raising my idle pressure to 50-60Mpa. I've also...
  19. kidturbo

    6 Speed Valve Body Question

    Super!!! I'll do some digging tomorrow also. BTW, glad to see you back on the keyboard again :welcome6:
  20. kidturbo

    6 Speed Valve Body Question

    What I figured. I have seen one with pan off before, but don't have one handy I can test on today. The NSBU looks like a TPS... Which could make this harder, I was hoping for a single switch in there.. Will take a look at the TCM pinout and maybe something jumps out at me. If not, gonna need...
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