Industrial Injection Valve Cover?

[austin1028]

I have an industrial injection valve cover with a Black Market Performance catch can vented to the atmosphere but with a drain back to block with a stock check valve.

Before the check valve, if I drive it long, it does the clog filter.

After checking the valve, after 200 miles, the filter on top of the catch can is filled with oil.

I’m using 12 and fittings from the valve cover to 12-10 and fitting on the catch can with 3/4 hoses.

I had no blow-by on the stock valve cover, but if you shine a light, you can see smoke on the stock and also on the catch can.

I’ve asked both Black Market and Industrial Injection, but neither has replied.

Is it because my fittings are too big and allow oil to flow through?

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