Are you running rich or lean or just right? This question was often associated with checking the smell of the exhaust fume to "know" your air/fuel ratio. But it's actually more than just that. Monitoring your air/fuel ratio and maintaining it at the ideal number is essential to keeping your engine running in good shape. Staying true to its import tuner heritage, AEM created its own line of air/fuel ratio monitors for your motoring applications. We decided to test the AEM analog style wideband UEGO air/fuel ratio monitor in our modified second gen Honda CRX.
- With seven backlight colors to match the lighting of most factory gauge clusters
- The AEM Wideband UEGO (Universal Exhaust Gas Oxygen) Controller provides accurate air/fuel ratio reading of your engine
- Equipped with the Bosch 4.9 LSU oxygen sensor; no need for free air calibration
- Includes interchangeable faceplates and bezel for a customized appearance
- The AEM air/fuel ratio monitor came in with an easy-to-read manual complete with schematics, step by step instructions, and other helpful information. However, it might get a little tricky if this would be your first time to wire a gauge to your car. We also found that there is an online forum specifically devoted for AEM gauges. The online support group can help you figure out if you decide to go DIY.
- The technology found in the Bosch 4.9 LSU oxygen sensor allows you to use the AEM air/fuel ratio monitor without the need for regular recalibration. For us, skipping that phase is equal to more time to tinker with other components.
- We actually fancy the black on black combination to match our CRX. It looks very subtle and blends well with the interior. To complement the look, we decided to use the red backlight for a bit of racing vibe.
- The AEM air/fuel ratio monitor does not lend itself to non-AEM parts. We tried taking one apart and then rebuilt it with a different resistor. The gauge gave us a different reading.
Constantly monitoring your air/fuel ratio can prove to be beneficial to your vehicle's performance, efficiency, and longevity. You can really benefit from the AEM air/filter ratio monitor essential if you are driving a carbureted vehicle. But for vehicles with electronic fuel injection systems, its engine control unit can take care of the air/fuel mixture for you. And unless you are meticulous or involved in motorsports, you should be a happy camper even without it.