Stacking
Okay so my thoughts on a Smarty and Adrn stack are as follows.
1- With the stack you will only get an extra horse or two. Not worth the couple hundred dollars. Pick one or the other.
2-Quad Adrn has a bunch of options including adjustable on the fly. Smarty cant do that.
3-Smarty fuels great in the low range where as I notice my Adrn fuels outstanding down the track.
4-Stacking the two will not give more HP but will give you great fueling at the line and down the road. Guage options on the dash with adjust on the fly.
Its really up to you. How much do you want to spend? What do you want out of it. Do this look at all the classified adds for 2nd gen and see what box's and Programmer's people are trying to get rid of to upgrade. Then check the signature after they have sold their items and see what they drop in its place.

opcorn: