I have a 03 cummins that i just bought and it has no modifications done to it yet i want to get as much out of it as possible without going into the engine for now except maybe injectors what would be the best way to go help or opinions please.

 

i got a smarty on my 03 and i love it

 

do u ahve the tnt ??

 

Get a Smarty POD.... you can download the TNT for FREE

 

ya i got the tnt on mine

 

thx for the help