Tuning for economy? This MUST include Auto Trannies then.

[emarkay]

Well if we are logging for best MPG and related efficiciencies, let's discuss optimised tunings and all that!

[Zfreak]

I'm interested! Now we just need some experts to step in and give us some direction!

[emarkay]

Uh huh.......

And no oil burners or rice burners, please

[neil]

Is it possible to unlock or go into neutral on the 4L60 transmission when the DFCO activates?

Regards,

Neil.

[kbracing96]

Is it possible to unlock or go into neutral on the 4L60 transmission when the DFCO activates?

Regards,

Neil.

If that where to happen, then the motor would stop spining and die.

[neil]

OK. Is it possible to keep the TCC locked as you decelerate to low speeds?
If so. What would be the consequence if any of this occurring?

Regards,

Neil.

[N0DIH]

I tried it, at least on my 94 LT1 (OBD1) and decel worked fine, but the transition from decel to accel when I had to get back on the gas was too rough. I can't make that transition smooth at all. Maybe the LS1/LS2 pcm's have that ability, but mine is much more straightforward and simple. I can't go below 43 mph with DFCO on in OD, below that it will come out. I do have it very smooth operation now, but I can't do a TCC locked up in decel smooth and what I feel is safe enough on the TCC clutch itself. I feel the load on the converter with it locked is too much. Maybe for a 4L80E, but not a 4L60E.