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FJO Wideband Kits
Why do I need a Wideband AFR Analysis System?
Whether you're building a high performance street car or an all out race car, proper tuning is critical for maximum reliable power and torque. In the old days EGT (Exhaust Gas Temp) gauges, narrow band O2 sensors, and spark plug reading were the only means to get information about what AFR (Air Fuel Ratio) the engine was actually running. Each of these primitive techniques suffers from fundamental problems. Engines could not be tuned to their potential, resulting in less horsepower and lazy throttle response or melted engines.
EGT gauges react far too slowly to be useful as a safe tuning device. Typically pistons or valves will be damaged before the EGT gauge reacted to the elevated heat levels. In addition, many other factors can affect exhaust gas temperature so it is not an accurate measure of AFR.
All narrow band O2 sensors (single, 3 or 4 wire) suffer from the same inescapable flaw . They are accurate only under light load conditions. This is great for emissions and fuel economy but potentially disastrous for performance. Under full throttle conditions, just when richer mixtures are needed to keep an engine from detonating, narrow band sensors can be wildly wrong in their readings. The output of these sensors makes it virtually impossible to measure the difference between 12 AFR and 13 AFR, which in a high performance engine could be the difference between power and meltdown.
KWB4000
Mini Wideband AFR Controller Kit
(Single channel for ECU integration)
Includes mini wideband AFR controller (single channel), wiring harness, and oxygen sensor bung and plug. This is an AFR only controller designed for ECU or datalogger integration. Dual analog outputs provide FJO legacy and 0.5-4.5 volt linear output curves.
KWB4001
Mini Wideband AFR Controller Kit
(Single channel with RPM input and software)
Includes mini wideband AFR controller (single channel, with RPM input), wiring harness, oxygen sensor bung and plug, a PC serial cable, and software CD. Dual analog outputs provide FJO legacy and user configurable output curves.
Order sensors, sensor cables and other options separately.
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| for ECU integration |
$546.50 | $519.18 |  | KWB4000(kit) | | Single channel with RPM input and software |
$596.25 | $566.44 | | KWB4001(kit) | |
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