Just picked up a used Gryphon

[Medic150]

Ive read the instructions several times and installed my gryphon today. I installed the tranny tune just to get used to the way everything works. I can immediatly feel the difference. It feels much more responsive. I only went around the block to make sure all was ok.

In the instructions, I did not find a section that shows how to return the truck to stock.. what is the proper procedure to do this ??

Thanks guys !! This forum has been really imformative. Even to my dumb newbie questions

[Jackpine]

Originally Posted by Medic150

Ive read the instructions several times and installed my gryphon today. I installed the tranny tune just to get used to the way everything works. I can immediatly feel the difference. It feels much more responsive. I only went around the block to make sure all was ok.

In the instructions, I did not find a section that shows how to return the truck to stock.. what is the proper procedure to do this ??

Thanks guys !! This forum has been really imformative. Even to my dumb newbie questions

When you access the power programming menu again, you'll find there is now a "Return to Stock" selection. (It may have a slightly different name.) Just select it and it will return the PCM to stock. And by the way, to answer a question that's often asked, this is the ONLY way the PCM is returned to stock. Disconnecting the battery or the programmer does not "lose the tune".

- Jack

[Medic150]

sweet. thanks dude !!

Originally Posted by JackandJanet

When you access the power programming menu again, you'll find there is now a "Return to Stock" selection. (It may have a slightly different name.) Just select it and it will return the PCM to stock. And by the way, to answer a question that's often asked, this is the ONLY way the PCM is returned to stock. Disconnecting the battery or the programmer does not "lose the tune".

- Jack

[Medic150]

I just went out for a test drive. I set ttruck on the tranny tune and tried a 0-60 run to see how it works.

During regular driving. The truck feels really solid and feels torquy.
But while doing the 0-60. I stepped on it hard and it started to like surge looking for a gear then it finally shifted into gear pretty hard. I pulled in to the gas station for some gas and I noticed the unit stayed on when I shut the truck off.
And my unit is stuck on the 0-60 finished test screen. I shut the truck down but the unit stays on.

[Jackpine]

Originally Posted by Medic150

I just went out for a test drive. I set ttruck on the tranny tune and tried a 0-60 run to see how it works.

During regular driving. The truck feels really solid and feels torquy.
But while doing the 0-60. I stepped on it hard and it started to like surge looking for a gear then it finally shifted into gear pretty hard. I pulled in to the gas station for some gas and I noticed the unit stayed on when I shut the truck off.
And my unit is stuck on the 0-60 finished test screen. I shut the truck down but the unit stays on.

When the Gryphon screen stays lit after shutdown, it's generally a sign of a failing battery. Please disconnect your Gryphon from the OBDII port (the lit screen will rapidly deplete a weak battery) and have your battery load tested.

When you reconnect, make sure the ignition is ON, before you plug the Gryphon in so that it can boot properly.

- Jack

[Medic150]

I have a brand new battery, I highly doubt that was the issue.. I tried shutting the truck down several times. and it was staying on.. Not knowing what to do, I decided to unplug the gryphon at the unit.
Once it shut down, I put the key to the ON position and plugged it back in. It gave me the hex key and then went straight to the Main menu.

All seems fine now but I havnt drven it again.

What do you think about the surging and hard shifting ?? Is the tranny tune not designed to be pushed hard ??

Originally Posted by JackandJanet

When the Gryphon screen stays lit after shutdown, it's generally a sign of a failing battery. Please disconnect your Gryphon from the OBDII port (the lit screen will rapidly deplete a weak battery) and have your battery load tested.

When you reconnect, make sure the ignition is ON, before you plug the Gryphon in so that it can boot properly.

- Jack

[Jackpine]

I suspect what you felt as surging was the engine hitting the rev limiter between the 2-3 upshift. In a Wide Open Throttle (WOT) shift situation, the shift is commanded at a specific RPM, which you can set in the Custom Options Menu. I would not set this shift point above 5100. (Actually, I like 4975, since the torque and horsepower are generally dropping above 5000.)

Now, as the shift is commanded, the transmission clutch is applied, allowing the engine to freewheel for a short period (until the clutch is released and the shift completes). The freewheeling engine RPM rapidly increases and if it hits the rev limit, spark and fuel is cut to prevent damage. The RPM drops and then the whole cycle repeats until you come off the gas a bit.

If you make sure the rev limit is at least 400 above the highest WOT shift point, this problem will generally not happen. I have my rev limit set at 5500 in the Custom Options Menu. Don't go much above this point either, because the Torque Converter (TC) starts to balloon above 5400 RPM.

By the way, don't set the 3-4 upshift too high. It's actually hard to get a genuine WOT 3-4 upshift unless you're on a racetrack. My shifts are around 4975, 4975, and 4400.