air fuel ratio issues

For the last several months, I’ve been dealing with code P219A on my 2021 Mustang Mach 1 equipped with a Whipple Gen 5 Supercharger. Unfortunately, my stock catalytic converters clogged up, and I took the cheapest route to fix the issue — gutting (hollowing out) the cats while keeping the...

Over the past couple of months I’ve noticed something strange when I’m cruising down the highway at 75 (around 2.5k rpm in 6th gear). When I drop down to fifth gear to pass someone for say, if I stay steadily in that range without accelerating my car goes into this limp like mode. I have no...

Help! I am getting a weird "playground swing" noise coming from my front wheels when I turn. It only happens when wheels are rotating and I turn the steering wheel. If I am parked and turn wheel they do not make any noise, only when moving and turning at same time. The sound is similar to the...

Hey guys, last week out of the blue my coyote began having idle and drivability issues that has me stumped. After it settles down from the initial startup (warm or cold), the car begins bottoming out with rpm's fluctuating between 550-900. Along with that, the air-fuel ratio jumps in the matter...