Ok, the JWA is timing and duration only for my 04.5. Some time ago, I sent it in and got the HOT upgrade. In my quest for more bottom end power, I am planning to do some sort of downloader. I was thinking about a XZT with the pressure only program. Then I got to wondering how Edge gets the extra 50hp for the HOT upgrade. Is it just more timing and duration, or do they add pressure? If it adds pressure, I'm not sure I want to take a chance in stacking. I could call Edge, but why sit on hold waiting for a tech when I can post on here and then just check back later.

 

I run the hot juice on my 05
I was told by edge that it does not add pressure on my 05. I am thinking of stacking with the mp8 (seem to be the flavor of choice)

 

I ran the HOT Juice and EZ stacked on my 04.5 without any problems. It was a very good stack. Very smooth consistent power, never any codes or issues. That stack for me maxxed out at about 480rwhp and 13.8s 1/4s. I never did try with the Bully Dog Triple at the track before I switched to the TST box, so might have been more there with a triple stack.

 

But the mp-8 does timing and duration as well as pressure. The juice already does timing and duration. I don't konw what the limit is, or if you can or need to do other mods to stack similar boxes. Can anybody help with that?

 

The mp8 is pressure only. You may get a little indirect timeing but you should be fine with an mp8 and hot juice, it is a pretty popular stack. I originally planned on runnin my mp8 with my tst when it gets here but now that tst offers the fuel pressure option I may end up not usin it.