Just picked up a turbo b18c. I was told the monotech ecu is crome tuned. The car runs cool and strong. I noticed the o2 sensor is not hooked up to anything so I assume the car is running off an idle, part throttle, and a wot map with nothing in between? There is no fmu. The fuel is stock injectors @60psi. Im going to hook up a wideband o2 for an afr gauge to get some kind of idea of where im at before I save the money for 450's and a fresh tune. What types of concerns should I have and what are some things to check/look out for? No smoke, odd sounds, roughness, loss of power, or leaks.