6.7 straight pipe help
I am wondering what size exhaust to get to straight pipe my truck. I am going from the turbo back, everything will be gone and dpf will be deleted. I just do not know what size is the best. 4" or 5"? and what programmer has the best tunes H&S or Smarty? and is there lope tunes?
Thanks for all the opinions. One more thing, I was looking at the edge cts for use for the gauges instead of multipe ones. Since the edge plugs into the OBII port will plugging it up after i programed the truck affect it any at all? My bad im new to programming diesels




