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Tranny Hot Flash
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=56246		 Page 1 of 1
Author:  fastRob [ Thu Oct 14, 2010 4:21 pm ]
Post subject:  Tranny Hot Flash
Just received the Green Diesel tranny hot flash.
Itching to try it out but wanted to mention the quick service of Keith at Green Diesel and the good online directions with pictures, follow them, they make it easy.
If this is anything like the engine hot flash..., well, will write about it here.
Author:  CRD Joe [ Thu Oct 14, 2010 6:45 pm ]
Post subject:  Re: Tranny Hot Flash
Please explain a transmission hot flash. I understand going back to pre F37 conditions but I dont understand a transmission hot flash.
Author:  fastRob [ Thu Oct 14, 2010 8:35 pm ]
Post subject:  Re: Tranny Hot Flash
CRD Joe wrote:
Please explain a transmission hot flash. I understand going back to pre F37 conditions but I dont understand a transmission hot flash.


With the Green Diesel Hot tune, really an ECM flash, I have a lot of power. Everyone knows the F37 knocked the stuffing out of the CRD. Once again Green Diesel came up with a tune, lets allow Green Diesel to describe it:

"We have finalized a tune for the CRD to help with city fuel economy, towing and quicker shifting. This tune is not compareable to the pre-F37 stock TCM. The tune provides 3rd gear lock-up at 35 mph, 4th gear lock-up at 46mph and 5th gear lock-up at 58mph. Shifting is quicker due to allowing lock-to-lock shifts. In city driving conditions the tune provides more connected feel to the drivetrain and eliminates the constant rpm change everytime the accel pedal is pressed, thus providing a good fuel economy gain in city. With more lock-up the trans fluid temps stay lower due to less heat load from the torque converter.

The tune also helps with towing by allowing the customer the option to tow at 55mph in 3rd, 4th, or 5th lock-up. 3rd is available by using the OD off button and the trans will pull in 4th if one accelerates to 55mph and sets the cruise or just maintains speed. 5th is possible by accelerating above 58mph and then slowing down to 55mph. It will hold 5th gear down to 52mph.

During the vehicle warm-up the transmission will not lock-up until the trans fluid reaches normal operating temps...this is the same as stock during the warm-up.

This tune requires sending us the transmission controller (TCM). We will be adding step by step directions for removing this module soon. "

So this baby( GDE TCM flash or tune) will allow the Hot(Tune) Flash to transmit the power more efficiently to the wheels.
I call this getting more out of my Hot Flash (Tune).
Going to AZ this winter towing something with my Sportster in it. Got to be ready dude.
Author:  Gerge [ Thu Oct 14, 2010 8:39 pm ]
Post subject:  Re: Tranny Hot Flash
I installed the TCM as well, great improvement in driveability and shifting. My mileage has not changed, but I have been chasing bad mpg gremlins for a while. Keith is great to work with and the install was cake. Only part that stymied me was the tcm bracket closest to firewall has a tab that goes in a slot, no bolt. I spent a good deal of time looking for a bolt in spite of the online directions not showing one. Gave me time to drink another beer.
Author:  fastRob [ Fri Oct 15, 2010 11:51 am ]
Post subject:  Re: Tranny Hot Flash
Gerge wrote:
I installed the TCM as well, great improvement in driveability and shifting. My mileage has not changed, but I have been chasing bad mpg gremlins for a while. Keith is great to work with and the install was cake. Only part that stymied me was the tcm bracket closest to firewall has a tab that goes in a slot, no bolt. I spent a good deal of time looking for a bolt in spite of the online directions not showing one. Gave me time to drink another beer.

I like your attitude. I went back to the directions a few times myself. It seems I squandered my childhood on things not mechanical and now I must be mechanical because I cannot afford to pay others to screw up my machines any more.
Cheers!
Author:  usa591 [ Fri Oct 15, 2010 3:42 pm ]
Post subject:  Re: Tranny Hot Flash
I swapped out my TCM last weekend. I found that removing the air filter box gave me more room to maneuver in there. GDE's instructions are good & accurate. Once you wrap your mind around it, the whole thing can be swapped out in under ten minutes--about 1 beer.

I haven't towed with the new TCM, but driving around town does feel a little better--GDE describes it as being more "connected" to the powertrain, and I would agree.

-p
Author:  fastRob [ Sat Oct 16, 2010 8:24 pm ]
Post subject:  Re: Tranny Hot Flash
usa591 wrote:
I swapped out my TCM last weekend. I found that removing the air filter box gave me more room to maneuver in there. GDE's instructions are good & accurate. Once you wrap your mind around it, the whole thing can be swapped out in under ten minutes--about 1 beer.

I haven't towed with the new TCM, but driving around town does feel a little better--GDE describes it as being more "connected" to the powertrain, and I would agree. -p

Yes, removing the air cleaner did help with my clumsy fingers.
Good way of describing the tune, more connected to the powertrain.
My son noticed the difference too, driving feels different, not bad, just different.
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