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  1. Maintenance
    I am looking for the best OB2 scanner for my needs. Looking to be able to scan and get as much diagnostics as possible for the best price. Just want one for personal use, not really looking for software above LBZ as I do not plan on owning something newer than a LBZ. (Currently own a 02 LB7)...
  2. 11-16 LML Duramax Powertrain
    How do these numbers look to you guys? The MAF readings look low. Could the EGR sticking open cause this and my low RPM issues? THANKS!! 2015 Silverado 2500 Still jumping and bucking at 1200 RPM. Replaced CP4 (not blown) with Fleece CP3 Conversion Replaced Driver Side Fuel Rail Cleaned MAF...
  3. 07.5-10 LMM Duramax Powertrain
    I have a 2009 LMM Duramax deleted and tuned with a fass fuel system. It will go into limp mode from time to time but leaves no codes in it besides P02B9 this last time it did it. The shop that just did injectors in the truck said it was do to water in the fuel. They have cleaned it out since and...
  4. 04.5-05 LLY Duramax Powertrain
    I have a 05 lly, had new heads and injectors under 40k miles ago. Started it after I let my wife drive it one weekend 🤦🏼‍♂️ And it’s got fuel knock from hell. Cleared codes and it ran smooth as a whistle for over 120 miles and then throws codes p207, p2146 and p1293. Balance rates on 1,4,6,7 are...
  5. 01-04.5 LB7 Duramax Powertrain
    Sup guys I have an 02 Lb7 with a new motor and a couple mods, pretty reliable rig. Recently I have been seeing balance rate fluctuations on my injectors that make no sense. I keep a close eye on injector #8. Throughout the day, I’ll see My injector climb all the way to +15 while in park, and...
  6. 911 Problems Forum
    My 05 LLY runs great but while at idle starts surging once it’s warmed up to temp. Also when it starts surging the balance rates zero out. No injector knock or other noises just sounds like it’s cammed. Has new FPR Anyone had this issue? 05 LLY studded, deleted, FASS 165, PPE tunes, down...
  7. 04.5-05 LLY Duramax Powertrain
    Ok guys I have a lly thats bone stock. 175000 miles on the truck. I have a random knock that sounds like a bad injector. The conditions have to be just right for it to knock. Light throttle and cruising down the road. Even then it doesnt happen all the time but is becoming more frequent. Get on...
  8. 01-04.5 LB7 Duramax Powertrain
    To all, I replaced head gaskets on 2004 LB7 back in August of 2011 and in the process discoverered the injector inlets had grit covering about 3/4 of the holes and i cleaned them out and went on with the job and once finished it had a loss of power but it turned out to be the valves weren't...
  9. 01-04.5 LB7 Duramax Powertrain
    hey guys I just checked my balance rates with my Diablo Predator I bought off Ebay and here are the results... #1 -2.85 #2 0.15 #3 -0.32 #4 -1.60 #5 1.49 #6 5.33 #7 0.97 #8 0.48 In drive the #6 cylinder drops down to 4.75. When a little throttle is applied in drive they all go to...
  10. 01-04.5 LB7 Duramax Powertrain
    I'm giving off blue/white smoke at idle and had a friend check my balance rates with his efi live. 1. -6.5 2. -4 3. 14 4. -0 5. 1.8 6. 1 7. -4.6 8. -4 Filling a new filter up with ATF helped a little but its still there. Running a bottle of stanadyne (bottles says it'd treat...
  11. 01-04.5 LB7 Duramax Powertrain
    I'm pretty sure that 1 or more of my injectors are going bad, id like to figure out which ones. I have access to a Tech II scan tool but don't know how to check injector balance rates. Just wondering if anyone on here knows how to do this and would be willing to give me some instructions, or...
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