On the Evo forums and several other sources I read a lot about oil blow by and the correlation to knock and reduced octane rating. Most people recommend an air/oil separator to remedy the issue and the AGP set up is simple and easy. I have seen more expensive units that require you to install the fittings yourself and use Teflon tape or some liquid seal on the threads. To me this is just adding more room for error. The AGP unit is completely dummy proof and provides good clear instructions. My sole recommendation when installing this piece is do to limited work area, get all the hoses and clamps on the can first prior to mounting. Once you have that done, mount the can and keep the mounting bolt and the clamps loose enough for any needed adjustments. After install, the only differenced I noticed in my car is vacuum pressure now sits at a steady 20Hg, prior to install it was steady at 22Hg. Overall very happy with product.
cant complain best like always
As usual MAP beats everyone on offering a quality product; even less than if you ordered it from AGP directly! I bought this after reading a reputable speed shop blog that they believed the recirc into the intake by #1 cylinder caused knock to the result of a failed rod. This is cheap insurance for any modded car, especially turbocharged. The install was quick and easy, and fitment was perfect - there isn't a whole lot of room to work with. The only negative would be that to empty the catch can you have to remove the one bolt holding it to the frame and lift it enough up to remove the plug on the bottom. Then you have to be careful to not get oil all over. A nice improvement would be a petcock with a hose running to the bottom of the car.
Easy installation, quality product!! Install took less than 10 min