Many understand that crank case ventilation is a vital part of making power, and engine durability. One of the biggest weaknesses on the OEM Aluminum valve cover on the 4B11, is the crank case vent, located on the driver side of the valve cover, is very restrictive.
Many aftermarket Catch cans come with an adapter to just plug into the oem fitting, converting what is a 1/4" opening, to a 10an (~5/8"). This is no improvement over oem. The only way to adequately improve flow is to increase the size of the opening in the valve cover. Simply using an adapter that converts the fitting to a -10AN fitting, simply doesnt cut it. In fact it will flow no more than the oem system.
We will add a proper AN fitting, with your choice of size, either 10AN, or 12AN to the side of the valve cover. During the process we will remove the factory 1/4" fitting from the top of the valve cover, and fill it in as if it were never there. Then remove the factory internal baffles, and clean any debris out before reinstalling the baffles using stainless bolts.
We can also have the valve cover powder coated, before installing the baffles. Your choice of color/finish. Please contact us for cost powder coating, some finishes cost more than others.