Now here is where the forum engineers fail, BACK PRESSURE no one has brought that up yet, backpressure is good, too much bad, this is a fine line the gentleman pointing out that the cfm is choking the motor no matter which muffler is correct and the engineers at Ford want that and they have an...
Better check again! My 2025 was delivered WITHOUT a EPF exhaust particulate filter, because trump got elected and cancelled them, I get to keep the 13 HP, YEA!