A Few ?'s

[88Racing]

The high flo cats won't need any changes to the tunes but if you go truduals then that needs to be addressed.
The crazy rpms and shifting?
The only thing I can think of is that the tow tune was loaded with a custom file right away.
The tow tune needs to be loaded first then driven awhile with no custom options applied then the TS and GR can be changed in the CO menu.

[todd.scallions]

Ok, maybe that's what I did wrong. I set it to Level 2 two and then drove it a few miles and then changed the TS & GR to what I am running on the truck. It's back at stock now and driving much better. What about updating the Gryphon? How do I know if there is even an update avaliable?

[88Racing]

There hasn't been an update for the gryphon since 12/1/2008.
If there's an update they will let us know!
The level 2 canned needs to be driven at least 50 miles maybe more, while varying your speed. This will help build files so when custom options are applied then it works OK.
Some trucks do it and others don't.
When you went back to stock you reset your pcm so its in a new learning mode no different if you disconnected the battery.
That's why it may feel more frisky in stock.

[todd.scallions]

I put it back to Level 2 before I left work and I did not change the TS or GR this time. It's shifting fine now and the idle speed is a lot lower now. Here is what I "think" happenend. When I changed the TS & GR I didn't change anything else under the custom options menu. If it just loads "placeholder" settings for all the other options then maybe something else needs to be changed to compensate for the larger tire size and smaller gear ratio. Then again, this is all new to me so maybe I'm way off. Either way, Level 2 with no changes is working fine... Except for the spedo being off a bit.

[Longshot270]

Now you should be able to go in and change the tire size and gear ratio.

[88Racing]

The TS and GR are the only 2 in the CO menu that use place holders.
The other thing I thought of is if you didn't save your values and somehow backed out of the CO with the place holders in place then loaded your canned level 2 tow.