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

4l60e trans tables in TunerCat

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Old Jul 7, 2009 | 07:50 PM
  #1  
94zgreenmachine's Avatar
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4l60e trans tables in TunerCat

Not sure but does anyone know if this is right?
The table is Shift time(sec) vs.Shift,Normal mode,low altitude
SHIFT


TPS% .... 1>2... 2>3... 3>4...
0.0 .... 0.750... 6.375... 6.375
6.3 .... 0.750... 6.375... 6.375
12.5 .... 0.650... 6.375... 6.375
18.8 .... 0.725... 6.375... 6.375
25 .... 0.700... 6.375... 6.375
31.3 .... 0.750... 6.375... 6.375
37.5 .... 0.775... 6.375... 6.375
43.8 .... 0.750... 6.375... 6.375
50.0 .... 0.725... 6.375... 6.375
56.3 .... 0.750... 6.375... 6.375
62.5 .... 0.725... 6.375... 6.375
68.8 .... 0.725... 6.375... 6.375
75 .... 0.750... 6.375... 6.375
81.3 .... 0.750... 6.375... 6.375
87.5 .... 0.750... 6.375... 6.375
93.8 .... 0.750... 6.375... 6.375
100 .... 0.750... 6.375... 6.375

I am trying to troubleshoot a transmission problem. I had no problems with it before the new engine combo. The programming was the only thing changed as I had the "high stall" problem before this combo. I am still using the Edge 3400 stall.

I am using a 58 MM Tb. I also have a Trans Go shift kit(stage 2) and have rest the pressure tables back to stock.

I made the change for 4.10 gears.

Last edited by 94zgreenmachine; Jul 7, 2009 at 07:56 PM.
Old Jul 7, 2009 | 11:03 PM
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My 95 stock tables are extremely close to what you posted.

Old Jul 8, 2009 | 12:01 AM
  #3  
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So you didn't rescale all the shift tables for the new axle gears?
Old Jul 8, 2009 | 05:09 AM
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Originally Posted by shoebox
My 95 stock tables are extremely close to what you posted.

I guess I am not understanding the 6.375. Is this just a value or is this time in seconds to complete the shift from 2>3 and 3>4?

As far as rescaling shift tables, There are many things that changed when the new ratio was entered in. I am not sure if it had changed with it.


This is my first time into the programming so any explanation into any of the tables or where to look is greatly appreciated.

I am trying to see if my problem is programming rather than mechanical. I am hoping it is programming. The symptoms of the tranny is:
1>2 shift I can't feel. When stock with shift kit, it would chirp tires. After doing the old LE set up and program change this never happened afterward.This is still a problem with this AI setup and new program.
2>3 and 3>4 shift takes forever to shift. I did notice the main line pressures where actually lower than stock settings and after reading about shift kits and line pressure, I reinstalled stock settings in the mainline 0-64 and 64-120 main line settings. I also changed the constant table back to 90 psi. I haven't installed this program and tried this yet. Probably today I will after I install the fast AFR kit and log my AFR as well.

Any feedback or insight on what I had changed?
Old Jul 8, 2009 | 07:41 PM
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Originally Posted by shoebox
My 95 stock tables are extremely close to what you posted.

How did you post that table? I must have edited my post 4 times to be able to make out what I posted.
Old Jul 8, 2009 | 10:24 PM
  #6  
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Originally Posted by 94zgreenmachine
How did you post that table? I must have edited my post 4 times to be able to make out what I posted.
Screen capture, cut and pasted to an image.
Old Jul 8, 2009 | 11:16 PM
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Originally Posted by shoebox
Screen capture, cut and pasted to an image.
I'll give that a shot for future posts, Thanks
Old Jul 9, 2009 | 01:02 AM
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Originally Posted by 94zgreenmachine
As far as rescaling shift tables, There are many things that changed when the new ratio was entered in. I am not sure if it had changed with it.
When you use the 'Speed Calibration' window in tunercats it fixes all the odometer/speedometer crap, but won't change the shift tables.

Shift tables are TPS % vs. MPH. Regearing changes the engine rpm at whatever MPH. So for example when going from 3.73 to 4.10 gears you'd want to multiply your MPH shift points by 3.73/4.10 = .91 (or 91%) to regain shifts at the same RPM as before.

I've never modified the shift time table, I'm not sure exactly what it is. I'd leave it alone unless you find out what it is, but I don't think it's something that really would need to be changed

Last edited by MikeGyver; Jul 9, 2009 at 01:06 AM.
Old Jul 13, 2009 | 08:56 PM
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Originally Posted by MikeGyver
When you use the 'Speed Calibration' window in tunercats it fixes all the odometer/speedometer crap, but won't change the shift tables.

Shift tables are TPS % vs. MPH. Regearing changes the engine rpm at whatever MPH. So for example when going from 3.73 to 4.10 gears you'd want to multiply your MPH shift points by 3.73/4.10 = .91 (or 91%) to regain shifts at the same RPM as before.

I've never modified the shift time table, I'm not sure exactly what it is. I'd leave it alone unless you find out what it is, but I don't think it's something that really would need to be changed
When I enter the gear size, everything gets rescaled. No if the scaling is correct, I do not know but when I enter the change and hit apply, the tables change as well.

I did find my mechanical problem. I changed the fluid/filter before I drove the engine combo.The filter was not engaged all the way. Best we can figure is it was sucking air. Thank god it still works. I did order the pro street elite kit from Dana at pro built automatics. I also got a vacuum modulator. Its old school but it works.
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