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Thread: Whipple trackhawk issues

  1. #1
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    Whipple trackhawk issues

    I have a 18 Trackhawk we done quite a bit of work to paid a tuner to do a remote session on dyno and we still have some quirks in the truck i need to work out after doing a little street driving. The tuner seems to be way too busy to help us anytime soon and i really want to smooth these issues out, first off it has a pretty good part throttle surge. I've toyed with the throttle settings from some research here and its tremendously helped that truck drives 100x better but I am a Veteran gm tuner this mopar stuffs new to me and i could use some insight. My other issue is a extreme timing pull going into 5-6 gears on a pull torque source goes from pedal to transmission. I will attach the final tune file from tuner and the one where ive been tweaking it along with some logs. Any helps greatly appreciated. Truck made 950 at the rear tires on my dyno with front shaft removed.e85 v4.hpt2018 Trackhawk JP V3.hptv3pulls.hpllight throttle surge.hpl

    Mods ive done are ID1700 injectors, whipple gen 5 3.25 upper 10% lower pulley, longtube headers, fore triple pump fuel system, interchiller and thermostat and colder plugs pump e85

    Final file from tuner is the first attached
    My tweaks is the second file

  2. #2
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    COT is all zero'd out but that is what it looks like huh

    maybe raise target temps a lil?

    5.24a.png

    there is nothing in the trans tune/tq mngt at 5200 to pull timing like that

    maybe the iat tstat?

    happens right at 115 degree and your hot table has some big numbers

    maybe zero em out and try a pull to see if that is playing into it?

    5.24tstat.png
    5.24tstat1.png

  3. #3
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    Ill give them a try, thats all stuff the tuner I paid done. Good point on iat table also only thing that threw me off was where the torque source changed from pedal to trans al

  4. #4
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    another thing i saw was that max torque seemed low in more than one spot

    forgot to mention that

  5. #5
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    I’ll post it on lunch, I haven’t touched any trans parameters and from what I saw when I compared the tuner who tuned it for me didn’t touch a lot on the trans side either

  6. #6
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    Stock file uploaded to original post
    Attached Files Attached Files

  7. #7
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    I did notice no timing or throttle pull on shifts. I’ll hit the switches on the torque management back to stock and post a new log and how it does tonight

  8. #8
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    It was changed on like the 2nd or 3rd revision the tuner done from what I can tell

  9. #9
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    Quote Originally Posted by spoolboy View Post
    I think it's possible that the FSO and ETC switches got reversed during one of the updates to VCM Editor..... no guarantees.
    that is something i never considered but would explain some of the results lately

    does not explain this tho:

    5.25shift.png

    look at his 2-3 shift. Its like you said, dc drops (which it will with rpm) but the pcm is throwing timing at it, not pulling, as it should

    5.25.png
    5.25c.png

  10. #10
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    I don?t have my lap top here but if that shift is ?normal? than there was something wrong with the other 3 in the screenshot

    I think the next two shifts look the way it is supposed to, shifting with no intervention. No idea what is up with the 1-2 and the huge fuel pull. Or why there is no spark intervention

    Knock? If you apply an oncoming clutch, thus pulling the motor down, and throw timing at it at the same time, it?s going to try to knock

  11. #11
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    Truck still seems to not pull timing on shifts with the torque switches on. Heres a log from tonight still working on the throttle also
    Attached Files Attached Files

  12. #12
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    stop this now

    your trans is not gonna take much of this

    5.25 trans death 1.png

    i know a lil of it is tire slip but not cool

  13. #13
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    May just end up loading it up and hauling it somewhere to have it retuned, I dont have the time to learn this ecu and just want it fixed. The 1350 i spent with this "big name" tuner has turned out to be a waste.
    Not sure what else to do to fix it
    On that first pull truck spun pretty good for some reason also, the road wasnt the greatest i was on

  14. #14
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    Disconnect battery,reload tune, write entire on both ecu& tcm, Crazy as it my sound ,but some times parameters “stick”
    04 RAMGTX........ 8.91@151mph 392Ci G3Hemi 3600lbs 2.6HP/Ci Naturally Aspirated
    05 RAMGTxtreme 9:45@142mph 426Ci G3Hemi 4000lbs 2.2HP/Ci Naturally Aspirated
    09 Challenger Drag Pak 8.88@150mph 376Ci G3hemi 3650lbs 2.6HP/Ci Naturally Aspirated
    G3 Hemi Videos

    https://www.youtube.com/channel/UClS...5mXdDR5sOxs10Q

  15. #15
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    Will do I will try that this evening

  16. #16
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    winner winner chicken dinner

    spoolboy 1

    transmission 0

  17. #17
    Why is nn disabled. This tune at least v4 has very little done. Does it have a cam and does it have the stage 2 tb?

  18. #18
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    Ended up paying to have truck retuned, all seems to be 100x better than before on his 3rd revision.

  19. #19
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    Glad you got it. That original tune is not the way I would have set it up. Lots of good points above. Stinks you had to pay another tuner to do it after the first. Sometimes the "big name" tuners get a little caught up in their big name. LOL

  20. #20
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    even the TQ mgmt was turned off on V4.