tuner?

[05BHD]

crewcab with 8in lift on 37's. what tuner is the best? with dpf still installed.

 

[OOWeaver68]

you want to keep the dpf?, i would go with spartan, best thing out right now, but you will not gain much power or mileage with keeping the dpf, and it will get clogged up faster,
spartan has dpf tunes, and very good customer service and very nice tuner/gauges

 

[GMC2500HD]

I would get the H&S OBDII port plug to stop regen and then install tuner of your choice. Otherwise go with Spartan, that seems to the brand of choice..

 

[Abrannan19]

If I had a 6.4 Spartan would be the only choice.

 

[trapit]

ditch the DPF and get a Spartan