ccv mod
Elder User
Joined: May 2004
Posts: 637
Likes: 0
From: Forest Hill, MD
The CCV mod reroutes the CrankCase Vent system that in stock form vents into your intake system. That is what causes the oily residue around your intercooler boots. Most guys reroute the system to run out the rear of the truck. The best way to do it is to get about 12 feet of 3/4 inch hose, remove the CCV box on the driver side valve cover and turn it around so the outlet faces the rear of the truck, attach the hose to the outlet, and run it out towards the rear of the truck. You can leave the stock CCV vent in the air intake hose if you plug it, but it is better to just remove it, and get a 4 inch long section of 4 inch tubing and use that to replace the CCV vent.
