I am thinking about getting the juice. Can you calibrate your speedo with this for bigger tires and what other advantages are there as in can it read codes also.

To do tire size, speed limit, and codes, you'll need a tuner like the Diablo Predator. The Juice is a module and cannot do these things.

Kennedy's a supporting dealer and knows his stuff. Here's what I personally know.

If you get the attitude with the juice, you can have a speed readout on it that is corrected for your tire size.

The Diablo Predator programmer is the only programmer I know of that will let you change the redline and take off the speed governor.

As far as I know from my experience with the hypertech I had on the truck, the
hypertech won't calibrate for any tire sizes, won't take off the limiter, won't change the redline... Hence why I took it back. The power it gave me wasn't worth the expenditure, I decided my Banks was the way to go for me, for the time being.

the only calibration the computer allows is for the 2 sizes of tires the truck came with stock. Anything more than that and I believe you need to use the superlift speed calibrator box. That superlift box feeds the truck's computer the correct signal for the speed that you're driving, giving you back ABS. I have heard that it only goes off the rear speed sensor though, somewhere on here there was something about that being a problem with 4wd or something, not sure though.

I think I better put the superlift speed calibrator on then go from there. Do the bigger tires really mess up the shift points?

Not really. I put 285s on mine, and to me it drives the same, just accelerates a little slower.

Dennis

also, the predator for LLY does NOT allow you to increase the rev limiter - in fact it falls flat at about 3,000, where others do not. You can change the speedo, and remove speed limiter with the following ( LLY ):
TTS - programmed into pcm, adjust for all
BULLY DOG TUNER - can change both and increases rpm's
PREDATOR - can change both but doesnt increase rpm's ( atleast on mine )
QUAD
HYPERTECH

more ???

The Bully Dog does a really good job for me.