I have a stock 08 6.7l cummins and plan on tuning and putting performance exhaust on in next few weeks, I need some info on efi live autocal and what to do as far as exhaust. Do I only need a turbo back exhaust or what?? I'm thinking 5" but really don't know what route to take. Any help would be appreciated thanks

 

I use an EFI Autocal, I opted for turbo back exhaust. you can get away with a DPF delete pipe if you want be sure to get the pipe or syster that DOES NOT HAVE bung holes for the sensors. I broke one of the sensors right off, the others i had to use a torch and a pair of vice grips to get them off. i just hooked them back up and zip tied them out of the way. that way you dont have open wireharnesses flopping around. i think the delete pipes are around 200 i got my full exhaust for 350 with muffler. check out youtube and look up 6.7 cummins exhuast. tons and tons of clips. go with which ever one sounds the best!