Originally Posted by blk450er
What is the cac pipe and ccv reroute? Sorry for the ignorance, completely diesel illiterate
Charge air cooler pipe (AKA intercooler pipe). It's the pipe that comes off of your intercooler and meets the stock intake elbow.
Crankcase vent reroute. It's a simple mod that can be done in the driveway at home with some heater hose, a plug for the intake, and hose clamps. Your crankcase is currently venting into your intake. To eliminate this, you do a simple reroute. Most people just dump it to atmosphere under the truck but others do it a little more sophisticated and have a closed loop system or dump it into their exhaust.
If you can afford to do all 5 mods around the same time, go for it. You can also do it in steps. The DPF delete and EGR cooler delete are going to be the ones I would shoot for first.