It's based on torque loads
Type: Posts; User: carneb
It's based on torque loads
If it's the one I'm thinking of (just has an enable rpm and disable rpm) its only there to prevent you revving the engine with your foot on the brake.
Agree 100%
The 0 1 2 refer to different torque loads. 0 is low torque, 1 is medium torque, 2 is high torque. I thought Chris did a post a while back that mentioned the actual torque values of each band but I...
morgan72 the shift time isn't measured from when the shift is first commanded. What happens (I think you've mentioned some of this in your latest posts) is that when the shift is commanded the TCM...
Not sure if someone has already mentioned this, but the trans can't do a direct 5-1 shift, it has to do 5-3, then 3-1, or 5-4 then 4-1 etc,so I don't think you'll ever get a lightning fast 5-1...
I dont think the VCM controls have the ability to do the trans fast learn adapts yet. You need to use a Tech 2
It lets you filter based on the rate of change of something. For example you can filter out any data points when the throttle % is changing more than a certain amount. This gives you more consistent...
I was making a custom PID today in the scanner and noticed that there is now the option of dy/dx (transient) filtering. How long has it been there I don't remember it being anounced?
It's because the pressure is being reported in a different way in the scanner. If you look at this thread http://www.hptuners.com/forum/showthread.php?t=18561 post #10 it explains it. The base...
Oncoming volume preset is the volume of fluid required to fill the clutch so that it can hold torque during the shift. From what I can tell it shouldn't change unless you rebuild the transmission or...
I've noticed the opposition product has 4 buttons, so I'm guessing the 4th button is the fast learn adapt and HPT just doesn't support this yet?
Looking under VCM controls there seems to be 3 buttons, Trans adapt reset, Trans Adapt preset, and Trans fast adapt reset. I assume the resets just clear the learned values. Is the preset the Trans...
I didn't think that the TCC solenoid used PWM at all? Not according to this anyway:
Maybe we need something to tell the TCM that we don't want it to give 20-80rpm of slip when locked up?
Yes. Lots more parameters were added in 2.22
2.23 is the beta version. You have to email support and request to get access to it.
07 model cars have an extra table "Base CT Downshift - select." For some reason it doesn't appear in 08 and 09 models
Most of the TCM PIDs will show as unsupported unless you are connected to the car.
You have to be connected to the car before selecting the PIDs and save the config file. If you later open the...
I think the adapt volume is only for the oncoming clutch so it doesn't matter which clutch is offgoing. If this is the case then the volume adapt for 2-3, 4-5, and N-R should all be the same because...
I used the config file that I attached when tuning.
Good pickup Bluessv about the max volume only being 40. I've never noticed that before. I guess most trannys only require that but yours needs a...
I haven't really used the histograms for TCM tuning. I did use a couple just to see what was happening but they weren't that useful. When I get home I'll check to see what they were.
I've attached the config I use.
You should also log turbine speed. If flare occurs you will see the turbine speed increase before it drops to the level of the next ratio. Logging calc. ratio also helps in determining when a shift...
From what I've read the adaptive pressures should learn what pressure is required for the oncoming and offgoing clutch to ensure good shift quality. The trans should detect a flare or tie up during a...
I have a request for some extra PIDs for the 6L80 in the Scanner. I don't know if they are even available but if they are they would be nice to have.
1. Driver Demand Torque - Probably in the ECM...