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    Please take a look and critique!

    Hello,

    I appreciate everyone's help on here over the last year or so. I wish I was better at this and able to help out more. I have attached my tune for you to take a look if possible. I really...
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    I tried it and it worked nice. Got into 3 degrees...

    I tried it and it worked nice. Got into 3 degrees of knock retard after 2-3 shift for a short period. Backed those cells down and it works nice....for a 4low wide open pull. On the road it is OK, but...
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    Old School racing timing table

    I have a question. I am curious if this will work and work well. Some qualifying facts before I begin. This is for a straight up race tune in a jeep with an LQ4 for a 300ft dirt drag. Line up, floor...
  4. Thread: 4x4 Low Range

    by gup72
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    9,381

    Problem solved thanks to all of the input and...

    Problem solved thanks to all of the input and help on here. Solution on thread link above.

    Thanks a bunch everyone!
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    For all of you that are curious... Zero out...

    For all of you that are curious...

    Zero out the 1-2 shift RPM and MPH tables. Works like a charm.
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    Srobertsfsj, Believe me when I say I...

    Srobertsfsj,

    Believe me when I say I struggle through all of this. I think you can add the tables you need to make your 2wd ecm to work for a 4wd ecm, but I am not 100% sure. You may have to...
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    Ranger6202, You are the man!! I was about to...

    Ranger6202,

    You are the man!! I was about to give up hope. Email has been sent to Bill.

    Thanks!!
  8. Thread: 4x4 Low Range

    by gup72
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    9,381

    Well, I had another thread in the engine section...

    Well, I had another thread in the engine section and look what someone posted! I didn't research enough!
    ...
  9. Thread: 4x4 Low Range

    by gup72
    Replies
    15
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    9,381

    After much research and experimenting here is...

    After much research and experimenting here is what I have found. BTW, my VSS is after the transfer case, not after the transmission. I hope this helps those 4x4 owners out there. The 4wd low range...
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    I thought that too so I ran the wire and it is...

    I thought that too so I ran the wire and it is the right one. When I turn it on and off it changes the shift points if I am in 2hi to be really quick because it is doubling the mph reading. I have...
  11. Thread: 4x4 Low Range

    by gup72
    Replies
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    9,381

    I will give it a try, thanks for sharing. For...

    I will give it a try, thanks for sharing. For this weekend I'll have to run the tune where I lied and said it was 80 tooth ring.
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    I do need 4th gear. Zeroing out all the values...

    I do need 4th gear. Zeroing out all the values works really well it seems. It starts in second and works fine while in 4 low, with the exception of shifting at 1/2 the programmed RPM.

    I would...
  13. Thread: 4x4 Low Range

    by gup72
    Replies
    15
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    9,381

    Does it shift at the correct RPM in 4 low? I...

    Does it shift at the correct RPM in 4 low? I have the same setup and the switch works because it changes the shift points, but it still only shifts at 1/2 the RPM it should. I have altered the ratio...
  14. Thread: 4x4 Low Range

    by gup72
    Replies
    15
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    9,381

    Did you ever get it to shift at the right RPM in...

    Did you ever get it to shift at the right RPM in 4-low with the VSS on the tail shaft of the TC? I have the same issue and vehicle shifts at 1/2 the RPM it does in high range. Switch is wired...
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    I now know why people put the VSS on the...

    I now know why people put the VSS on the transmission tail shaft. Makes more sense because then it doesn't matter if you are in 2 hi or 4 low. The speed signal is still the same and therefore shift...
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    4L60e won't shift right in 4 low, tune attached

    I need some help! I have a race on Saturday and I can't get my jeep to shift right in 4 low. It works perfectly in 2 or 4 hi. The VSS is in the tailshaft of the NP205. I have a 2007 LQ4 that came out...
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    program to not use 1st gear

    I race my jeep 300ft sand drags. When I use 4 low it shifts out of 1st so fast it is useless. Is there a way to program my 4L60e to not use 1st gear? I would only use this tune at the races. If I...
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    Got it fixed. Wired the relay to use the switch...

    Got it fixed. Wired the relay to use the switch as the ground. Put the relay in series with the purple wire going from ignition switch to starter relay. Was easy and works great.
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    Can't believe I didn't say this sooner..... My...

    Can't believe I didn't say this sooner.....

    My case doesn't have the mounting bosses for the stock switch. No way to mount one easily.
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    Jon S. Can you be more specific with what you...

    Jon S.

    Can you be more specific with what you are thinking?

    Thanks,
    Jon
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    The issue is the LQ4 vehicles used the range...

    The issue is the LQ4 vehicles used the range switch as the neutral safety switch. I am trying to figure out how to have the neutral safety switch with a single wire input. My shaft on the tranny...
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    Thanks for all the information. Jon S, I...

    Thanks for all the information.

    Jon S,
    I changed it to "none" and flashed the PCM. I have tried turning the DTC P0850 for "P/N input circuit" both on and off with no change in how it acts. It...
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    I was afraid of something like that. My trans...

    I was afraid of something like that. My trans doesn't have the extended selector shaft to accept the factory switch. My PCM isn't the right one to do the single wire. I guess I will see about the...
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    Thank you MechanicMan. I have read on lt1swap.com...

    Thank you MechanicMan. I have read on lt1swap.com that the pcm can be flashed to accept the f body single wire p/n safety switch. Can this be done?
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    could it be a quirk with the segment swap?

    could it be a quirk with the segment swap?
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