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The location of the V3 PCV fix kit check valve has been updated. The new location of the check valve improves check valve longevity and prevents condensation from freezing inside the check valve. The routing change can be made easily by swapping the long and short sections of the hose before and after the check valve. If necessary, the hose can be replaced with 5/16" PCV/Fuel hose available at your local auto store (V3 requires 18" and V3.1 requires 21" of hose). This update is applicable to both the V3 and V3.1 designs.
The old V3 check valve location was right behind the "Y" fitting as shown. Note the longer hose before, and the shorter hose after.
The new V3 check valve location is right by the T fitting. This allows the check valve to sit at an angled orientation, which prevents accumulation inside the valve, keeping it cleaner and improving the service life of the valve. Be sure the arrow on the check valve is pointing away from the T fitting. Hose between check valve and T fitting should be 2 inches long.