Which chip to get???

[new_truck_guy]

I have an 06 Duramax (LBZ) and I'm looking to maybe put a chip in it....I got a price on the triple dog system at about 650 with the in-cab monitor...is that a good price...also do I need an aftermarket exhaust to run it....I am looking for mostly better fuel mileage so what system is the best for the money...I'll take any suggestions..THANKS

[GMC6000]

I have a preference for the Predator. Go to Dieselplace for all the info on programmers you want.

[Shaners]

I'm running the Edge-EZ. With this unit you don't need to do any exhaust mods. If you turn it up more than this unit, then exhaust mods are probably a good idea (along with an EGT gage).