There are no current delete tunes for the 13-14 cummins. TS makes the Stryker, it's a injector duration module. Changes the spray pattern on the injectors and advertises at 135hp. I have one. On my 2014 works nice, you can tell its on there. But more hp is always nice.
Bully Dog just released a tuner that Hardway Performance dynoed at 465hp to the wheels.