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  1. IdahoRob

    60' questions.

    Tire pressure will help a lot. Remember tire pressure when the truck is sitting in the pits means nothing. One of the big reasons people get wheel hop (if already have some sort of traction bars) is front to back tire pressure. So many people run higher pressure in the front than the...
  2. IdahoRob

    Roll Cage Technical

    Keith's cage was built here in Idaho, Nathan had it done. I have the builders contact info if needed, he did some work on my Camino when the cage didn't cert to 7.50. There are certs that you don't have to have rear bars through the window like my camino but they are not good for the street...
  3. IdahoRob

    when are ARP 625 studs "necessary"?

    I always re-torque head studs on my race truck after running it hard for the first time (1 event usually). Even running 625's and now 14mm studs, it's amazing how much torque they take. They then are good for the season. Things settle, re-torqueing is a royal pain but I feel it is needed...
  4. IdahoRob

    2nd gear start tcm tune

    I love when my opponent does this. Really comes down to the type of truck. Street trucks can do this, I like to have some boost up even if driving a 11 second truck. 10 second trucks and faster, you should be on some boost before pre staging. Watch last weeks race when a truck staged this...
  5. IdahoRob

    2nd gear start tcm tune

    It takes 3 stage bulbs to light before auto start activates. Only 2 lit, take your time unless you were the one that wasn't courteous. You will burn up a converter at some point. Using for a best ET on a slick track or to win an event is worth it. Living by a second gear launch because...
  6. IdahoRob

    Trailer tires, better than "E"

    Congrats Russ. I have battled this for years. My 30' stacker with the truck and car and other things like golf cart and tools was a challenge to keep tires under it. I bought 10, 12, and 14 ply trailer tires and ran "e" rated truck tires and nothing lasted long. Basically with the 25k weight...
  7. IdahoRob

    1/4 mile discussion and time slips post here!

    Congrats to Industrial and Dallas, fast a$$ truck. NHRDA weighed it and it crossed the scales at 6040 so weight is legit.
  8. IdahoRob

    Duramax pioneer thread

    I'll list a few that changed the Duramax scene for all of us; Guy Tripp @ Socal Diesel. He is the one that worked with EFI Live in the very beginning to bring the world of custom tuning to the Duramax world. He also brought his vast knowledge of cylinder heads and performance engine parts...
  9. IdahoRob

    New to Efi Live

    http://atptrucks.com/blog/efi-live-faqs/ Here is some reading for you and some videos we created. This should shed some light on what EFILive is and options for your needs.
  10. IdahoRob

    New to Efi Live

    If the tuner just loaded in tuning, then you will not be able to datalog. If you received an EFI unit along with tuning, then you have the tool to datalog but will need support/instructions on how to log and view.
  11. IdahoRob

    Understanding compound boost numbers

    Total boost is 60psi, low pressure turbo boost is 18psi. Your overall P/R is 5.08 Primary (low pressure turbo) P/R is 2.22 Secondary (high pressure turbo) P/r is 2.28 Your high pressure turbo is making approx. 19 psi of boost (2.28 x 14.7) minus 14.7 = 18.8psi (all based on if baro is...
  12. IdahoRob

    I miss racing....

    Tom, I wasn't making it to the track enough with the diesel organization and it's very expensive running Max'd Out at the track every weekend. I solved this by picking up a couple of LS1 Z-28s. My 16 year old drives one of them, he got a cam for Christmas and installed it. He worked a lot...
  13. IdahoRob

    Diagnose this bad pull

    If your data logs are showing constant timing, fuel pressure, and injection flow rate throughout the pull, then it is not ecm/tuning issue causing the problem. It is mechanical. Could be engine, turbos, etc. I'd do a compression check before anything. Next would be a pressure test on the...
  14. IdahoRob

    LML mods and dyno testing begins

    The regens with this tune are not too much different than stock. I'm around 350 miles in city driving and bumping up to the 700 mile limit on all highway driving. DEF usage seems lower, I'm not sure why. Winter fuel increases regens for sure. I averaged 18.2 mpg on a trip to Oregon for racing...
  15. IdahoRob

    LML mods and dyno testing begins

    I tested at the track before the lift pump install. The same tune that made 500HP without a lift pump didn't perform on the 1/4 mile. Dropped rail bad about 3rd gear and didn't recover for a while running 14.2's with 2.0 60' times. I installed a tow tune with mild pulse and the truck went...
  16. IdahoRob

    LML mods and dyno testing begins

    Still running all factory emissions. We added an Airdog 4G lift pump to the truck. Driving impressions; The truck seems to have better throttle response in a mild tune just with mild TPS input. May of been just my mind justifying the pump, but since it is my daily driver, I have a good feel...
  17. IdahoRob

    LB7: Drive pressure vs boost

    Basically drive pressure is the exhaust that is trying to get out of the cylinders and backing up against the turbine. So a lot of drive pressure compared to boost (back pressure on the intake side) doesn't allow the clean air to get into the cylinders. This is the basic idea on why you want...
  18. IdahoRob

    8.62 @ 161 video

    Very cool Brett, you sure have it running well! Way to represent the Dmax community.
  19. IdahoRob

    1/4 mile discussion and time slips post here!

    Thank you Russ I'd like to Thank Russ for being classic gentleman. He came down the track to the car after the crash, and never once even looked at the car until he made sure multiple times that I was OK. He never had a bad word to say, truly shows what a quality person he is. The car was...
  20. IdahoRob

    LML mods and dyno testing begins

    LML MBRP Downpipe install: Test vehicle: 2013 GMC LML with all factory emissions in place. To recap our previous testing please check out our Project LML blog http://atptrucks.com/blog/project-lml-duramax/ The downpipe manufacture HP claim is 21hp and 24ft lbs. We will see how this piggy...
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