Running the car richer will increase power (13:1 a/f as opposed to 16:1) , what I am not sure about is, will unplugging the O2 sensor and running off the fuel map actually make it richer or is it tuned fairly lean anyways? If you unplug the O2 sensor will it go into the same open loop mode as when its cold or a different one is what I was wondering? I thought about running a resistor for the temp sensor to make it think its cold all the time, but I would rather not deal with having to solder in a resistor and put an aftermarket temp gauge.