I would steer clear of industrial injection, a lot of people have had bad experiences. S&S makes a kit that allows you to keep EGR and has a "recurved" cp3 that doesn't require any tuning adjustments, not sure if you're in cali but it is also CARB certified. If you are tuning, I believe they also have a kit that has a normal CP3 but still allows for EGR. The other option is to call wehrli, Im not 100% but I believe they may be able to do something with their kit to allow for EGR present.