The can on a streat car should be recirculated so it drains back. Is yours? If your can does drain back and you are still filling it up then you probably have a hurt motor.
Check out
The Old One - Energy Dynamics for his catch can setup and diagram. Try to see if yours is plumbed the same way. If it isn't then follow his diagram.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.