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  1. Thread: 2 HR Tune

    by Chevy406
    Replies
    4
    Views
    2,608

    Depends on how many modifications the vehicle...

    Depends on how many modifications the vehicle has. It's easy to tune a mostly stock vehicle in 1 hour and a typical modified LS engine in 2 hours. But it helps when you've tuned hundreds of them...
  2. Thread: ls3 timing

    by Chevy406
    Replies
    2
    Views
    778

    Most vehicles with knock sensors are overly...

    Most vehicles with knock sensors are overly sensitive and will pull knock retard timing well before there is true detonation. Increase your fuel octane using race gas and see if the knock retard...
  3. Replies
    7
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    2,434

    I'm waiting on help with reading C304A in a 17...

    I'm waiting on help with reading C304A in a 17 Corvette. Looks like a wide spread issue.
  4. A VVE zone search landed me in this thread, and...

    A VVE zone search landed me in this thread, and the ZL1 zone tables cured a troublesome CTSV cam tune right nicely. Thanks for taking the time to share this info.
  5. Replies
    5
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    1,742

    Your MAF table is extremely low (at least in the...

    Your MAF table is extremely low (at least in the low Hz range) and has a bad overall curve shape. Start back with the stock MAF and tune it based on your fuel trims.
  6. Replies
    4
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    5,228

    "Sounds like engineering knows about the issue....

    "Sounds like engineering knows about the issue. There is not currently a fix, but it is a known issue with these vehicles."
    update for anyone else that has this issue.
  7. Thanks for the detailed response Luke. It's...

    Thanks for the detailed response Luke. It's always so helpful to hear input from highly experienced engine builders & tuners. Especially love hearing from Australia friends.

    Johnny, you should...
  8. Replies
    4
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    5,228

    "Key Fob Not Detected" with MPVI2 in C6 Z06

    2 times now when I have my MPVI2 connected in my C6 Z06 I get a "Key Fob Not Detected" message when I try to start the car. Remove the MPVI2 and it starts right up. Is there a fix for this? It...
  9. 2017 Silverado On3 Turbo - RPM bobble in first gear

    Trying to help my friend with his 2017 Silverado fitted with an On3 turbo kit. I thought we had the street tune pretty well sorted out on 12 psi boost, but at the track we data logged a stubborn RPM...
  10. Replies
    22
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    16,327

    Want to say a big thanks to Bill for posting the...

    Want to say a big thanks to Bill for posting the ID1050x flow data. For some reason I was struggling to get the data entered correctly. After 4 nights of idle problems it all settled down using...
  11. Replies
    68
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    134,157

    Really surprised at all the negative comments and...

    Really surprised at all the negative comments and unwillingness to upgrade to the 4.0 software. If you don't like the background, border, font, text size, etc it is easily changed. If you just want...
  12. Thanks for the replies. I did not know about 65v...

    Thanks for the replies. I did not know about 65v / 12v control on DI injectors. When you had the steering column lock issue, did the starter engage and turn over the engine but without any voltage...
  13. L86 DI 6.2 swap into 1996 LT4 Corvette - no voltage to injectors

    I am trying to startup a 1996 Corvette with an L86 direct injected 6.2 engine. The engine is from a 2017 Escalade; ECM is from a 2017 Denali; harness is new from GM.
    I did a VATS delete, Starter...
  14. What file do you need?

    What file do you need?
  15. 3/12 Update: Ben Charles and GHuggins were...

    3/12 Update:

    Ben Charles and GHuggins were correct - this loss of power was an airflow problem. The mechanic that installed the system corrected a boost leak and the car eventually put down 690...
  16. Great input Area47. Thank you so much for...

    Great input Area47. Thank you so much for sharing your experience.

    I've had 3 driveshaft failures on the dyno (2 in the same 67 Chevelle with the transmission tunnel cut-out to fit a 6L80). I'm...
  17. Replies
    5
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    2,917

    Idle > RPM: Make sure all of your idle tables...

    Idle > RPM:

    Make sure all of your idle tables match - Base, Startup, VSS
    Increase the Adaptive Idle > Min RPM Ref to 800 or 850 rpm
    Integral > Airflow: Increase the lb/hr for negative RPM...
  18. Disable Traction Control / Active Handling: On...

    Disable Traction Control / Active Handling:
    On Fords and Dodge you can change the engine size to anything but stock in order to disable traction control while on the dyno. Dodge in particular will...
  19. Thanks for the input. I agree that it really...

    Thanks for the input. I agree that it really appears to be an airflow problem. In 4 pulls it was quite repeatable and steadily dropped about 100 rpm from 5,800 to 5,600. On the last couple pulls I...
  20. 2013 Corvette Procharged - power drop above 5,500 rpm

    I've been doing some tune work on a manual 6-speed 2013 Corvette Grand Sport with BTR blower cam, headers, ~90 lb/hr FIC injectors, and Procharger P1SC. This car is making good power until a point...
  21. I wasn't able to get the truck back on the dyno...

    I wasn't able to get the truck back on the dyno after making the changes suggested in this thread, but I did make some street pulls last night. I tried to incorporate comments from MMGT1 and murfie....
  22. Dyno tuning comments, observations, setup ideas - collection of thoughts

    After a long dyno session last night I decided (after 3.5 hours of sleep) to create a thread to both help me remember settings and experiences; create a collection of things I've found that might...
  23. Thank you so much for taking the time to look...

    Thank you so much for taking the time to look through the file I posted. I have made the following changes based on your recommendations:
    Increased y-axis in Torque Calculation, Borderline Spark,...
  24. I think you and I are fighting similar problems...

    I think you and I are fighting similar problems with Procharger 5.0 vehicles. I just posted a thread listing my current state of aggravation. For now I'll just sit back and see what I can learn...
  25. 2013 F150 Procharger P1SC - dyno graph unstable above 4,600 rpm

    I am working with a 2013 F150 4 wheel drive with a 5.0. The owner installed a Procharger P1SC kit with the 0280158117 fuel injectors. The supercharger and injectors are the only modifications to...
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