Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

trans tuning issue

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Old Jun 17, 2007 | 08:25 AM
  #1  
red 95 z28 lt1's Avatar
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trans tuning issue

hey i just got lt1 edit and i need help with my trans, i want to adjust my kickdown. i sent out my pcm for tuning and now i have no kickdown or no lockup,

when i floor it from a 20 roll my car leaves in 2nd not 1st

i have 3:91 gears and 3600 stall converter

what has to be changed in the tables?
Old Jun 17, 2007 | 09:30 AM
  #2  
red 95 z28 lt1's Avatar
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here is my file

http://s20.quicksharing.com/v/27979/frankscar.LT1.html
Old Jun 17, 2007 | 10:35 AM
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I don't have anything set up to host a file but if you send me your e-mail I made the changes for you. You can compare them to the original file.
Mike

Last edited by jakesz28; Jun 17, 2007 at 11:08 AM.
Old Jun 17, 2007 | 11:57 AM
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red 95 z28 lt1's Avatar
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sure my email is
motirman7@aol.com

did you see anything wrong?
Old Jun 17, 2007 | 12:02 PM
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Yes just about all the tables for the TCC were wrong and the speeds for the upshift and downshifts did not match the 3.91 gears.

E mail and file sent. If you don't mind who did the changes to the file?

With tunercats it saves the file as a .bin file can you change it back to a .LT1 file?

Last edited by jakesz28; Jun 17, 2007 at 12:16 PM.
Old Jun 17, 2007 | 12:33 PM
  #6  
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pcm for less did the changes, i originally used madz28 but then i was having issues with stall wall

im new at this so ill see if i can change it back somehow

thanks for the help
Old Jun 17, 2007 | 01:04 PM
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I raised a number in the constants to help with the stall wall. There was a file out there called "lt1 to .bin file converter" but I could not find it today.
Old Jun 17, 2007 | 01:36 PM
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i found the conversion software, i did a search on this site,

i seen what you did, ill reflash the pcm tommorow or tuesday and see how it works out,
also, do you have to reset the pcm by pulling the fuse every time you re flash it?

thank you for all the help as i am a newbie to computer tuning
Old Jun 17, 2007 | 02:14 PM
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Originally Posted by red 95 z28 lt1
also, do you have to reset the pcm by pulling the fuse every time you re flash it?
I do. May as well; it only takes 10 seconds or so.

Dan
Old Jun 17, 2007 | 02:41 PM
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I just found this on this sight.

http://carprogrammer.com/Z28/PCM/Tools/TuneConv.exe


Is this what you used to change it?
Old Jun 17, 2007 | 08:21 PM
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yes i did use that
Old Jun 19, 2007 | 04:30 PM
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Did that take care of the problems?
Old Jun 19, 2007 | 11:10 PM
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im not sure yet i havent tried. ive been having a busy week so far.

as soon as i try it i will let you know. Thanks again
Old Jul 17, 2007 | 06:19 AM
  #14  
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nope problem is still there, i dont know what pcm for less did but before i sent it to him i still had the converter lockup at cruising speed and i still had a propper downshift that is the only thing that is wrong
Old Jul 20, 2007 | 06:28 PM
  #15  
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It looks like I skipped over the kickdown pionts the last time. I just sent you a e-mail. You may have to tweek the mph points some for the gears.



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