Car is a 1965 Mustang with a 200 six, auto trans, stock load-o-matic dizzy and autolite 1100.
When I use the stock air cleaner, the car runs perfectly. Idle is smooth and air fuel ratio is perfect as measured by a wide band O2 sensor. When I switch to an open element air cleaner, the car runs lean no matter how far I back out the mixture screw.
This tells me that the stock air cleaner is restrictive, and I can likely get more power of I can get enough fuel for the open air cleaner to run properly. What can I do here to get more fuel iinat idle?
When I use the stock air cleaner, the car runs perfectly. Idle is smooth and air fuel ratio is perfect as measured by a wide band O2 sensor. When I switch to an open element air cleaner, the car runs lean no matter how far I back out the mixture screw.
This tells me that the stock air cleaner is restrictive, and I can likely get more power of I can get enough fuel for the open air cleaner to run properly. What can I do here to get more fuel iinat idle?