I have been searching around on here for a while now and i was looking for someone who could help me figure out how the various boxes and tuners make their power. I want to hear something like "****** makes power by advancing timing, increasing fueling, but doesn't increase boost levels." I am sure you guys that do stacking know most of this, but i am having trouble piecing together some of the information. Thanks a lot.

They all advance timing some and increase fueling a bunch.

I am looking for a bit more specific details. Just like i am pretty sure that the pred. and hypertech both just increase fueling and i have heard that bully dog and VA advance timing. But, i don't know if that is all they do. I was kinda hoping this could help out those who would be interested in stacking.

On an LLY, there are a few ways to increase power:

a) Injector duration
b) Injector timing
c) Boost control
d) Put it in a GMC.

;)

for edge- Injection pulse width and time of injection are the only things modified by the
Juice. The Juice monitors and controls the duration and time of the injection
pulse widths to increase horsepower and torque.

taken from the FAQ on their site. You might search for each programmers site and look at their FAQ to help.
http://www.edgeproducts.com/pdf/FAQ_Juice_Chevy.pdf

McRat, will badges and sheetmetal work or will the engine still know that it still has a chevrolet vin #?

duct tape works for the reverse effect-

I am looking for a bit more specific details. Just like i am pretty sure that the pred. and hypertech both just increase fueling and i have heard that bully dog and VA advance timing. But, i don't know if that is all they do. I was kinda hoping this could help out those who would be interested in stacking.

Trust me, the Predator changes the injector timing, I can hear it. So does the Edge. Edge specifically told me that theirs does. On the LB7 juice, Lev0 only changes timing and is worth about 20hp. And like I said, they all add fuel (longer injector pulsewidth), thats where the power is.