Forgive me if this is old news, I've been up in the mountains w/o cell phones or internet much of June.
But I just went to update my Superchips Flashpaq 3815 and saw where it now supports the 4.7, 5.2, 5.9 and even my Grand Cherokee with the 4.7!

Claimed specs are VERY impressive, especially on the 5.9 gas engine: 46.9 HP and a whopping 59.4 ft/lb. of torque...

http://www.superchips.com/products.p...Grand+Cherokee

 

Ive been wanting one for awhile and this pushed me over the edge im getting one. Ill post up on how well it does.

 

Yea, I'm waiting to hear back from them. My Grand Cherokee has the 4.7 H.O. and I don't know if it is supported. Many factory differences from a standard 4.7 and I know it has a different factory tune. So I figured it best to inquire before I put the truck back to stock to try it on the GC.
I was gonna ebay my 3815 when I had the $ together for my cam & SCT tuner with custom tune, but if it works on the H.O. & the gains are noticeable, I'll just keep it and use it on that...

 

is it a new special one that works on the 5.9. or can you use the old 3815 and upgrade it on the web? if you can upgrade it on the web,how hard is that to do? do you have to pay something. i have the max energy and been wanting to get the sct. a guy on here wanted to trade me my hypertech for his sct 3815. i didnt think it would work since his is the hemi and mine is the 5.9. but if it would i want to give it a try.

 

How is the SCT tuner, i was wondering about that too. Its more expensive but everyone says its amazing.

 

mine wont work with his anyway.[:@]