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

Holy transmission tables/Tunercat

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Old Aug 10, 2003 | 11:46 PM
  #1  
Dan K's Avatar
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From: so close I can taste it...
Holy transmission tables/Tunercat

Man...after popping open the tables menu enough, I'm tired of seeing all of those A4 trans tables that I don't touch that I would like to get rid of the ones that I'm not going to use.
So, which ones are you A4 gurus using besides the shift point and lockup tables?
Which A4 tables can we get rid of out of the definition file?
And then how do I do that?

If someone can explain some of these A4 tables to me, I will add it to the "walkthrough" that I am slowly working on.
Old Aug 11, 2003 | 09:49 PM
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Tunercat uses its TDF Editor that allows you to modify their existing files and eliminate or add tables, constants as needed.

Works pretty good as I never need those pesky A4 tables and just erased them - try it free for 30 days.
Ben

Last edited by 95Blackhawk; Aug 11, 2003 at 09:51 PM.
Old Aug 12, 2003 | 07:41 AM
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I sure would like to know what the shift time tables do and what effect changing them has and how much can you change them.
Old Aug 12, 2003 | 11:26 PM
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Dan K's Avatar
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From: so close I can taste it...
Originally posted by JAFO1994
I sure would like to know what the shift time tables do and what effect changing them has and how much can you change them.
Me too.
Too bad no one really understands them, that I know of. I guess we should just pretend they aren't there and focus on the tables we understand. I'm still trying to completely understand how all of the tables relate to each other. Just wish I had a stock A4 to play with. Maybe I should just buy another camaro?
Old Aug 12, 2003 | 11:26 PM
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What are you trying to do now Dan??? Please tell me you arent messing with the trans tables in my program . I think you should test out your deleted trans tables on Darens-. Later

Brian
Old Aug 12, 2003 | 11:31 PM
  #6  
Dan K's Avatar
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From: so close I can taste it...
Originally posted by Camaro90RS
What are you trying to do now Dan???
Jeezus Brian...dont' worry, you're car is safe....for now.
Make it run again then you can complain about any programming issues...if there are any.
Old Aug 13, 2003 | 07:27 AM
  #7  
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I noticed my performance mode shift time tables were all set at 6.38, so I made my normal mode shift time tables the same and will see if that does anything. I really don't know if that's really 6.38 seconds or what variable it is or anything. It appears it's the maximum value.
Old Aug 13, 2003 | 09:59 AM
  #8  
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All of the "performance" tranny tables are only used if you have a button like some of the Trans Ams have that put the transmission into "performance" mode, making it shift firmer and at different shift points, and downshift more aggressively.
This goes to my previous post about how to make a button if you don't have one, and as it turns out, it can be done for only the cost of a cheap N/O (normally open) push button switch from Radio Shack.
http://web.camaross.com/forums/showt...hreadid=154096

Shift points is fairly straight forward. Main line pressures can be tricky, you can burn up your tranny if not careful here depending on weight and hp. My truck for instance is alot heavier than an f-body, but is the same exact tranny, the mainline pressures are alot lower because of the resistance weight of the truck when it shifts, the truck will not move forward as easily as an f-body.
Yet with a higher output hp motor, that will produce unwanted slip in the convertor and heat things up more with the lower line pressures, but too much line pressure for the weight is not good either. Must slowly adjust until the shift firmness is just right, then make the "perform" tables a little firmer for the occassional drag race, but you do not want to be driving all day with it in "perform" mode.
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