I‘ll start with the background, I added a 2013 TVS blower to my 2011 a few years ago and was running a stock TB and MAF with a resonator delete that I was given by Ihaterice (thanks Chuck!). After a few years and 75,000 miles, I decided to get off my butt and upgrade to a Ford CJ 65mm Throttle...
I’ve searched the the threads and haven’t found any solid hints.
The car idles fine, runs fine until I smash the pedal and take it above 4K, then I get a decent cloud of brown smoke out the exhaust and a CEL of P0430. “Catalytic efficiency below threshold bank 2” is what it displays, and...