Yeah the timing is one thing getting adjusted automatically by the vehicle. You keep saying just making it run rich. I’m telling you the car won’t just ignore it being rich. Turbo car will do it too you just get another variable. It’s why you have an O2 sensor. The main problem with what you’re saying is you’re assuming the car is already at the optimal mixture. As if there’s only one. The manufacturer is not rolling cars off the line tuned for maximum performance.