Hi, I am posting current tune and a log. The log consists of me backing out of the garage and getting on the highway, so the whole progression to 4th gear and overdrive. It's a short log too.
I am aware that there are multiple converter PIDs but it feels king of obvious the clutch is locked after recent changes. I really need to get up to speed on what a TCC is/does/needs...
The vehicle is a 2002 Silverado 1500 2WD 5.3 full bolt-on with a built 4L60 (FTI 3200 rpm stall). Rear is stock 3.42 final drive but welded to be posi all the time.
So I noticed in 3rd gear the TCC was bumping and thumping on and off as I guess it is tuned to do so from the factory. After some research I began to suspect that it should be turned off in all but 4th gear in order to stop the annoying madness as well as to prevent it from burning up. My attempt to accomplish that this morning resulted in it being locked all the time, probably because I set the release speed to 229 mph.
Let me tell you it drives nice, very positive and controllable, tranny temps are low and engine very responsive. But I aimed to accomplish the opposite - never locked until 4th. I will probably still try that tonight to see how it feels.
What is best for a daily driven race truck??? What does it want? What is an electronic torque converter clutch and how strong is it? Again I am posting my log and current tune, and here is the statement from the service literature:
"?A torque converter with an electronically controlled capacity clutch (ECCC)
This transmission is equipped with an ECCC. The pressure plate does not fully lock to the torque converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in SECOND, THIRD, and FOURTH gears, depending on the vehicle application. ECCC was developed to reduce the possibility of noise, vibration, or chuggle caused by TCC apply. Typical apply speeds are 49?52 km/h (30?32 mph) in THIRD gear and 65?73 km/h (40?45 mph) in FOURTH gear. Full lockup is available at highway speeds on some applications.
"
Log:
20-02-13 05-13-32.hpl
Tune:
Plan C- BETA.hpt