Let me say I am really happy with the gryphon as my gas milage has went up about 1.5mpg and while towing a trailer the tranny seems to downshift less on long hills. My only question is I have a 97 with the 5.4 and none of the custom options are available. I run 93 octane so I want to bump my timing up but I cant. I did order custom tunes also but overall I love being able to have the guages on the dash.

 

Talk to Customer Support at Edge about this, Nick. The Custom Options are somewhat limited in the earlier model trucks, and you may not have this feature.

I'd personally use 87 octane and the Level 2 tow tune while towing if I were you though.

- Jack

 

I will tomorrow Jack, as for the towing I was using the canned tow level 2 program with 93 octane because thats what was already in the tank