i am running a torque dog plug in box, i keep hearing about the mp-8 and the tst. would one of these be better? mine is supposed to be 140 hp,

 

the tst is a pretty strong box. I would turn your timing down if you plan to run it with the crazy larry if you can adjust timing on your tst. the tst seemed to work the best stacked for me with the BD or with a smarty seemed to make the best results. the mp8 will just give you more rail pressure and you really dont need that with the R49 tst you can adjust rail pressure, timing and choose 4 programs I believe with the remote. the smarty/tst/mp8 stack is a pretty popular combo on here but you dont always need a pressure box to make power. there are tons of very powerful trucks not running a pressure box, many people claim they are hard on injectors and can crack nozzles