The reason you need an O2 Conditioner for each O2 sensor with FuelTech PowerFT(FT450, FT550, FT600) ECU's! In the early stages of FuelTech, it was more cost effective to have a separate wideband controller from the ECU, and it free'd up processing power and space when combining the screen with the ECU. It also helped with heat management inside the ECU, and if an O2 sensor shorted out, it would damage a relatively inexpensive add-on instead of the ECU. As the company grew, they recognized more advantages to keeping the O2 conditioner separate. Many racers were using FuelTech either without O2 sensors, and others using up to 8 O2 sensors! By having the conditioners separate, it also gives a separate screen for O2 reading from the main dash, freeing up dash space for other readings. If you wish, you can tuck the O2 conditioner away and just display O2 readings on the dash. You do have the option to use other brand O2 conditioners, but we strongly recommend sticking to FuelTech's for simplicity and consistency.
What you need to know about the WB-O2 Nano Wideband O2 Controller! The FuelTech WB-O2 Nano is a solid choice for fast and reliable O2 sensor data to your FuelTech ECU. It can be connected to your ECU via CAN, has it's own digital display, and has an IP67 rating so it's a solid choice for automotive, off-road, and marine environments. It is only compatible with the Bosch LSU 4.2 sensor, which is durable and a great choice for unleaded gasoline, ethanol and ethanol/gasoline blends, methanol, and diesel. It should be noted that the Bosch LSU 4.2 sensor does lose significant lifespan when used with diesel, leaded fuel, or in 2-stroke engines. The WB-O2 Nano has a reading scale down to roughly .35 lambda depending on your sensor.
What you need to know about the NanoPRO Wideband O2 Sensor Controller! The FuelTech NanoPRO is a newer version of their WB-O2 Nano conditioner with some new features, and a larger range of O2 sensor support. Like the previous WB-O2 Nano, the PRO communicates via CAN, and can even use the same harness if keeping a Bosch 4.2 LSU sensor, making upgrading to it seamless. The biggest new feature in our opinion is the larger digital touchscreen. It has a vivid display, all o2 settings can be managed within, and the screen doubles as a gauge or switch panel style button. The NanoPRO carries the same IP67 rating for durability in harsh environments. The reading scale is now extended down to .21 lambda depending on your sensor. The O2 sensors supported by the NanoPRO are the Bosch LSU 4.2, Bosch LSU 4.9, Bosch LSU 5.2, NTK Wideband O2, and NTK ZFAS. We prefer the Bosch 4.2 LSU for most applications, and NTK ZFAS for some Methanol only applications.
Both O2 conditioners will get the job done! It comes down to features for the most part. A WB-O2 Nano with a Bosch 4.2 LSU will handle 98% of the needs out there, even most methanol powered cars. If you prefer being able to use the screen as a separate configureable gauge or digital button, the NanoPRO is the ticket. The last decision is how many conditioners you need. You can use one conditioner and O2 sensor and configure it as "O2 General" for the engine. This case would be for an NA engine on a budget, or a single turbo application where all of the engines exhaust comes through a single pipe. You can use two conditioners, one for each bank in an NA engine or twin-turbo application. You can also use an o2 sensor for every cylinder in the more extreme NA and nitrous engines!
Now that you know which O2 conditioner you need, click on the one you want today!
