as the title says which one is better? and can both be stacked with the smarty, i have a banks 6gun now and wanna get rid of it for one of thoes and suggestions would help

 

^^^ Depends... what year truck do you have? What mods? Give some info to help you out better. What are your goals?

Those are two very different power adders. They can both be stacked with smarty. The mp-8 is a pressure box much like the six-gun.
The TST is a duration/timing box (pressure is an option that is available). If your truck is beyond a certain build date (I think it is June 06) then you cannot run a TST. The TST does a lot more and is more versatile, but also costs almost twice as much. Stacking with Smarty though, you can only use it on low levels or you get too much duration and can hang an injector and melt a motor.

 

Sorry I have an 06 auto gauges 50 hp sticks cfm intake stock turbo I'm about to do studs cp3 and airdog 150. My truck was built feb 06

 

the banks 6 gun is weak as hell ijust tossed the one off my 03 and put an mp8 on and wow is all i can say im far from stock and one of these will put you over the compet. ijust now had to order another clutch lol