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  1. Verified repeatedly that the fuel pump primes...

    Verified repeatedly that the fuel pump primes instantly, holds pressure, zero evidence of leakage and no detectable issues with fuel flow. Watched fuel pressure during every start and no deviation on...
  2. 129830 Couldn't leave well enough alone so did...

    129830

    Couldn't leave well enough alone so did a little more tweaking. Now starts most of the time in less than 0.4 seconds and less than 1 second max. Did 12 starts yesterday and everyone was...
  3. You guys were right on. Problem was a fuel issue...

    You guys were right on. Problem was a fuel issue and specifically a Prime issue. I spent most of yesterday looking at logged data and comparing the Cranking parameters on last tune with other similar...
  4. Let me reiterate, the engine runs perfect for all...

    Let me reiterate, the engine runs perfect for all other conditions. It runs that good because I understand all the other parameters (after lots of research) and their effect on how the engine runs....
  5. What does the blue flashing light on the MPVI2+ mean?

    Interface is an MPVI2+. I plugged it in, turned the key on and got the Green Light.
    I then pushed the button to start logging (?), got a fast flashing Blue light. After a few seconds, I pushed the...
  6. I managed to cancel the Trick Flow injectors...

    I managed to cancel the Trick Flow injectors order. I guess you guys don't like Trick Flow either.
    I'd be happy to look at GM injectors. Would appreciate it if you could give me a link to 30lb/hr...
  7. Following your advice and ordered a $530 set of...

    Following your advice and ordered a $530 set of Trick Flow TFS-89030 injectors.
    Could not find a data/flow sheet for the Trick Flow injector but I did find a data/flow sheet for the Accel 150830...
  8. Not finding any problems with fuel pressure, fuel...

    Not finding any problems with fuel pressure, fuel leakage or fuel flow. Injector duty cycle at 6200 RPM is only 80%.
  9. The tests that I ran measuring fuel pressure did...

    The tests that I ran measuring fuel pressure did not show any fuel pressure reduction (stable at 46 psi) with the fuel pump off but will run the tests again to make sure there is no leakage.
  10. Thanks for the reply and I did google the...

    Thanks for the reply and I did google the question and searched the HPTuners forum, website, etc.

    Interface is an MPVI2+. I plugged it in, turned the key on and got the Green Light.
    I then...
  11. Injectors are Accel 150830 30 lb/hr. Used that...

    Injectors are Accel 150830 30 lb/hr. Used that spec to set the injector parameter in the tune.
  12. Thanks, your feedback is appreciated. Engine...

    Thanks, your feedback is appreciated.

    Engine has new Accel 30lb injectors. A/F ratio is where it should be and O2 sensors indicate PCM operating correctly in closed loop. Engine has no hesitation...
  13. Thanks. Stock regulator and it is vacuum...

    Thanks. Stock regulator and it is vacuum referenced. My thought is that if it were a fuel pressure problem, it should show up every time when cranking but it doesn't and all other conditions besides...
  14. Thanks, Fuel pressure checked good (gauged it at...

    Thanks, Fuel pressure checked good (gauged it at the rail) and no issues at 6000 RPM in 3rd or 4th gears.
  15. Thanks, I tried lots of variations of that and...

    Thanks, I tried lots of variations of that and didn't seem to make any difference. Was hoping that was the problem as it would have been an easy fix. I generally smelled fuel when it is hard to...
  16. GEN3 PCM Cranking Parameters Definitions and Effects

    Does anyone know where I can find the definitions and effects of the cranking parameters for a GEN3 PCM? I have searched and searched and can find same for every other parameter except cranking.
    ...
  17. What do the different colors of the MPVI2+ LED mean?

    I can never seem to tell what the MPVI2+ is doing based on the LED colors/flashing. Can't find any clear definition as to when the interface is logging data, when it is connected, etc. Help for this...
  18. Disappointed with the upgrade. Paid $400 for the...

    Disappointed with the upgrade. Paid $400 for the MPVI2+ and only need two more credits so only saving $100 when upgrading to the new MPVI3. Basically would cost me $700 for the new MPVI3, $400 for...
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    Sticky: It appears to now be Feb 10th and as far as I can...

    It appears to now be Feb 10th and as far as I can tell, nothing regarding any upgrades to MPVI3 has been revealed. And if/when that ever happens, will my credits now attach to the MPVI3? Based on...
  20. Cannot get transformed analog input channel to display on graph. Scanner 4.13.134

    I transformed an analog input channel (MPIV2 PL A/D Input 1 Red) from my wideband A/F meter to correspond to the actual A/F ratio. 0 to 4 volts = 10 to 18 AFR. But I could not get the transformed...
  21. You also need to be connected to the vehicle's...

    You also need to be connected to the vehicle's OBD2 port and Ignition On and Vehicle Connected, otherwise the Data Logging function cannot find the MPVI2+ Interface! That makes no sense at all. I...
  22. I answered my own question. You do need an...

    I answered my own question. You do need an internet connection to execute this function. So I ran a 200' CAT5 Ethernet connection to my laptop in the car.
  23. MPVI2+ Data Logging - Requires Resync but "Resync failed.NameResolutionFailure"

    I have an MPVI2+Pro. Latest Scanner Software. Latest Firmware in MPVI2+. Connected via USB to PC, Plugged into OBD2 port and Ignition on. When trying to setup Data Logging, I get Resync Resources...
  24. VCM Scanner Serial USB Input Channel Protocol

    I have a wideband A/F gauge with only an analog output. However, it is very easy to convert that analog signal to a USB serial output (using an Arduino) that I could plug into the computer and into...
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    Giving up on NBP and why.

    I have been using TrackAddict/RaceRender for quite awhile with OBD2 BLE and XGPS160 with no problems and works great. I would like to send Air/Fuel Ratio data (0 to 4v = 10 to 18) to TrackAddict via...
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