Performance DIY by DIY Guru

What is Wide Band Tuning? Wideband Tuning is basically the practice of manipulating a car's Air/Fuel Ratios to get the most power out of it. This is achieved by using a wideband oxygen sensor which measures your Air/Fuel Ratio from about 10:1 up to about 20:1 AFR. This means that a wideband o2 sensor allows you to specifically target your AFR.. A narrowband o2 sensor on the other hand can only measure upto 14.7:1, Why use a Wide Band O2 Sensor ?  The reason why tuners prefer wide band tuning is because of a few shortcomings of the stock narrow band sensor. Full throttle tuning only manages to tune about 1/5th -1/6th of the available map area. Part throttle where drivers spend most of thier driving time and it also happens to be the most common area for complaints. (e.g poor fuel economy, roughness, stumbling).Not many dynos are capable of holding a constant load for part throttle tuning. Dynos also have a some flaws such as inaccurate representation real world conditions li...