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Thread: LT1 Swap hanging throttle

  1. #1

    LT1 Swap hanging throttle

    Hi,
    I am working on a friends '67 Camaro with 2016 Corvette LT1 and a TKO600 transmission.
    I am not too familiar with the GEN V yet but have a weird issue where the car starts fine and idles ok but if I just give it a little pedal it goes to around 3000 rpm and stays there when I let off the throttle.
    I cannot understand why it would do this on a completely stock setup engine. I have tried to play a little with the driver demand and torque rate limits but have no change. Seems like the TB decides to stay open at 25-27% even when I let off. Any idea of why this would happen?
    Hopefully someone will have some idea as to what to try next. Everything on the engine is completely stock. I see the computer thinks I am going 158mph which is strange. There is no VSS sensor connected yet, but standing still I would not think this should have any effect.

    Tune and short log attached.

    Atle Bucher NY KORR3 Test torque rate2.hpt
    Atle idle test.hpl

  2. #2
    Advanced Tuner Shrek's Avatar
    Join Date
    Nov 2011
    Posts
    753
    The E92 calibration that you are using was originally from a 2016 Corvette LT1 8L90.

    Trying to make this calibration manual transmission compatible will not work.

    You need to program the E92 with a calibration from a 2016 Corvette LT1 manual transmission vehicle.

  3. #3
    I have been thinking this over and over today and have thought of the same thing. This has not been a problem for me with GEN 3 or even GEN 4 engines - I have just been setting the Auto to Manual and deleting codes (on GEN 3) in the tunes and stuff have been working fine with manual trans or older non-electronic transmissions.
    I was just comparing a Manual tune from the repository with what I have and I see that a lot for the torque settings are very different and probably a lot of the stuff I do not see in the tune as well.
    Guess all GEN V and probably all of the earlier torque based stuff will have the same problems. Good to know for future swaps.

    Will try to write a manual tune now and let you know how it works out. Thanks !