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Type: Posts; User: Mr.T

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    200K miles tune update

    I've updated the tune file in the first post with small changes in the spark tables for warm/hot temperatures and higher altitudes, plus some minor VE improvement at the high-end resulting from...
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    It's nice when leaks like that show themselves! ...

    It's nice when leaks like that show themselves! The tube sounds interesting, curious how it turns out on the 3.8L Jeep.
    :cheers:
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    From the Jeep factory service manual... The...

    From the Jeep factory service manual...

    The ESM switch mentioned above is essentially a vacuum switch that closes at a very slight vacuum, as in a few inches of water. The purge solenoid uses the...
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    I haven't changed the TB (Throttle Body); the...

    I haven't changed the TB (Throttle Body); the logging I've done is showing very little pressure drop at WOT with the original TB, especially using an AFE intake with the large 7-layer filter. A...
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    3.8L Jeep tune update

    Latest update added to post #1, and I'm pretty happy with this change! Essentially it's a three part'er to get smooth and precise torque when slipping the clutch from a dead stop, especially on...
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    Should be the same, or very similar. Compare,...

    Should be the same, or very similar. Compare, copy and paste to your stock tune file as desired. :cheers:
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    Yep, V558 is the latest and it's a manual trans. ...

    Yep, V558 is the latest and it's a manual trans. :cheers:
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    Yep, I have tried changing the Stopped Idle VSS...

    Yep, I have tried changing the Stopped Idle VSS (table 44216). Wish I could remember what the downside was, but I ended up liking changes to the Idle VSS (table 12983 on the Fuel>Oxygen Sensors tab)...
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    3.8L Jeep tune update

    Latest evolution attached in the first post. The percent power pedal request changed so the torque is very gradual and linear right off idle. The stock pedal request has an initial bump off idle...
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    3.8L Jeep Tune

    Just updated the first post with the latest evolution of this tune. :D

    Still using version 4.10.7, so that's probably the minimum to read the file. One can open it as a compare file, look at...
  11. Regarding the 2.0L Turbo in the JL Wranglers, any...

    Regarding the 2.0L Turbo in the JL Wranglers, any plans to support that engine?
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    Much of it can. Using the compare feature...

    Much of it can. Using the compare feature against your stock file will show the differences, then decide what changes to copy over.
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    I'm still using the MPVI as well. Eventually...

    I'm still using the MPVI as well. Eventually I'll upgrade, but it works quite well with the latest version. Suggest looking in the repository for an '07-'10 JK tune with an auto trans, then load it...
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    Thanks for the nice words! 30+ years tuning...

    Thanks for the nice words! 30+ years tuning control loops in industrial systems was a big help. It really is a very complex control loop with a lot of interactions, and we don't have the luxury of...
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    The settings from the Challenger didn't have any...

    The settings from the Challenger didn't have any affect either. Wondering if this a known issue? Perhaps it's just not enabled on some calibrations? Submitted a ticket, and we'll see what there is...
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    Didn't try that yet, super busy lately :cheers:

    Didn't try that yet, super busy lately :cheers:
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    Thanks, haven't tried an RPM of 0 and using...

    Thanks, haven't tried an RPM of 0 and using throttle as the only variable to cutout the A/C compressor.
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    A/C RPM Cutout (NGC4) ?

    Has anyone experimented with the high RPM air conditioning compressor cut out (NGC4)? Any thoughts?

    Although it appears simple (RPM with a minimum throttle, min/max speed and a couple timer...
  19. Thread: Idle spark...

    by Mr.T
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    You didn't mention the application or whether...

    You didn't mention the application or whether it's auto or manual. From the MAP in the trend graph, it looks like there's a new cam in it, spark is all over the chart too. My experience is very...
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    Changed plugs out to NGK Iridium IX 2314 (from...

    Changed plugs out to NGK Iridium IX 2314 (from Denso TT). The Iridium IX plugs (copper core w/ iridium tip) have less tendency for KR at higher IAT/ECT temperatures. This allowed advancing the...
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    Yep, it goes into PE (power enrich) mode...

    Yep, it goes into PE (power enrich) mode immediately after the acc pedal voltage is above a threshold. The time delay is inactive because of setting the VSS Min (permissive for the delay) to 127...
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    Thanks! Your post was a reminder to update the...

    Thanks! Your post was a reminder to update the tune file above with the latest version. It sure runs better after a proper tuning, it still logs some KR (as it should) but without hearing it --...
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    The USB cable connection to the puter or the ODB...

    The USB cable connection to the puter or the ODB connection may not be solid (clean with plastic-safe contact cleaner and make sure the connectors feel mated). If connections aren't the issue, the...
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    Hi TC, latest tune is in the first post in this...

    Hi TC, latest tune is in the first post in this thread: https://forum.hptuners.com/showthread.php?69086-2008-JK-Wrangler-First-tune-with-description&p=512440#post512440

    Best of luck, hope it saves...
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    Yep, been tuning at different altitudes and...

    Yep, been tuning at different altitudes and temperatures. I'll post up a new tune to the repository in a few days, and post a note here too.

    Regarding how to flash/use this tune: Upload your...
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