I have been having issues with oil burning every since I replaced my headgasket about 3 months ago. Every time I step on it full throttle, it lets out this enormous cloud of smoke that I can see behind me. I also have a large accumulation of black soot on my back bumper. I thought I was running really rich, but when my oil pressure shot well below 20psi at full throttle, I knew it wasn't just running rich. I checked the oil and I was 3 quarts low since the last time I refilled it about 2 months ago and my car only takes 4 quarts .

I have some questions on how to clear this up:

I have done a compression and leakdown test and they both came up normal, so is there a way to check the valve seals to make sure they aren't leaking because I speculate that they may be the culprit?

I have an oil catch can but I am not sure if I routed it right. It goes from a functioning PCV valve to the can to the manifold. Is there another way that I should have it routed to make sure that no oil vapor gets into the manifold to be burned off?

I removed the hose leading from the preturbo filter pipe to the valve cover because the turbo was sucking the oil back through the hose and burning it when it touched the hot blades. I replaced it with a filter. I have heard mixed things about doing this but I have no idea where to put it instead so it won't get a reverse vaccum effect. Any ideas?

Is there anything else it could be other than these things I covered. I have been bashing my head against the wall trying to figure this out but nothing seems to help. I really need to fix this problem because the oil is contaminating everything.