Air Fuel Ratio Gauge with O2 Sensor, Digital Display 2-in-1 Air Combustion Meter

58 reviews for Air Fuel Ratio Gauge with O2 Sensor, Digital Display 2-in-1 Air Combustion Meter

1. 

   Leland SuttonVerified Purchase

   Rated 5 out of 5

   Bought to help tune a 71 Vette w/Edelbrock Thunder series carburetor. It has helped with setting the idle/mixture and WOT AFR. I bought the exhaust cl...More

   Bought to help tune a 71 Vette w/Edelbrock Thunder series carburetor. It has helped with setting the idle/mixture and WOT AFR. I bought the exhaust clamp so I can use it on other vehicles also. Like they state it's having a dyno at a lower cost and I can use it anytime.
   

   Cara BeltranVerified Purchase

   Rated 5 out of 5

   So far works well. The manual will take some thought on adding sensor inputs. AFR changes fast. Had to space the sensor out. They supply a spacer to w...More

   So far works well. The manual will take some thought on adding sensor inputs. AFR changes fast. Had to space the sensor out. They supply a spacer to weld in with the correct spacing. Adding a map sensor took some thought. Used a buck voltage convertor for the 5 volt power. They had a forum on their website but stopped it. I think that would have been a good place for advice. They do give a support phone number. It take an SD card. Hard to find a standard card. Won't work with high density cards. I ended up buying the case and wire harness. Recording is worthless without rpm, vacuum or whatever data you would use on a carbureted engine.
   

   Kirsten PadillaVerified Purchase

   Rated 5 out of 5

   if you are needing to find what's your engine is running like if its running rich or lean or just want to fine tune your engine this is the great tool...More

   if you are needing to find what's your engine is running like if its running rich or lean or just want to fine tune your engine this is the great tool to have and its very easy to use
   

   Faizan SantiagoVerified Purchase

   Rated 5 out of 5

   If I could give this 10 stars, I would. I've worked on engines for almost 50 years, and still work on classic cars ( meaning carbureted) . I've used t...More

   If I could give this 10 stars, I would. I've worked on engines for almost 50 years, and still work on classic cars ( meaning carbureted) . I've used the "plug chop and read" method all this time with fair results. I now live at 7500' altitude and like to drive from here to the mountains and back in a day or two drive. Some cars stall out on drives to 10,000+ feet from fouled plugs.
   

   Garfield MccartyVerified Purchase

   Rated 5 out of 5

   This is by far the best tuning tool you could ever purchase. It is a must for getting the most performance from your setup! I was amazed at how bad so...More

   This is by far the best tuning tool you could ever purchase. It is a must for getting the most performance from your setup! I was amazed at how bad some of the cars were running that I thought were tuned well.
   

   Dulcie KirbyVerified Purchase

   Rated 5 out of 5

   I can finally log using a wideband that doesn't require a special RS to usb adaptor. I initially had problems but Innovate helped me along the way and...More

   I can finally log using a wideband that doesn't require a special RS to usb adaptor. I initially had problems but Innovate helped me along the way and their customer service is excellent. If you are having problems installing the necessary drivers, save yourself the trouble and just give innovate a call and they will walk you through it. I can finally log on my bmw e36 turbo using this wideband and bimmerlogger!!!!!! Thanks!
   Milly McclainVerified Purchase

   Rated 5 out of 5

   Purchased this gauge so I could install an AFR sensor for my piggyback ECU to monitor and adjust, I had high hopes for the price point and was not dis...More

   Purchased this gauge so I could install an AFR sensor for my piggyback ECU to monitor and adjust, I had high hopes for the price point and was not disappointed. The 4 face configurations is really neat and love the fact it came with white ones to match my interior (as shown, sorry for the crappy panoramic photo). The sensor wire, and the gauge wire to the sensor were both plenty long, and wiring in the power wire was super easy, it also includes a monitor wire (like use for the ECU) and a serial wire on the power line pin connector. Overall I am very satisfied with the quality and performance of it, the readings are instant (it changes with the slightest chance in throttle so virtually instant). Would buy again without a doubt! Also includes very detailed instructions which was super convenient.
   Kacie OrtegaVerified Purchase

   Rated 5 out of 5

   AEM is a well known company in the car world, and makes high quality products. I purchased this gauge to monitor my AFR and log for open source tuning...More

   AEM is a well known company in the car world, and makes high quality products. I purchased this gauge to monitor my AFR and log for open source tuning purposes. Installation was painless and took roughly 20 minutes since my downpipe already had a bellmouth o2 bung. I strongly recommended that you buy an add-a-circuit fuse kit (ASIN B01LFXA5UA) if you don't have any, it will make installation much easier so that the gauge can be powered by one of your car's powered circuits, like the radio. I had a few spares laying around, so I spliced this gauge and a boost gauge to one fuse kit without any problems. The kit also comes with several butt splices although one would suffice. The cables for the gauge are extremely long, so be aware that you must have adequate room to tuck them away. I paired this gauge with an AEM boost gauge (ASIN B001DX7KMY) and SMY Dual Gauge Cluster (ASIN B01M7MEKUS). The numbers are also very readable in the day time and stand out in the night, although the sweeping color band is a bit washed out during the day but still visible. No issues with this gauge and I'm very pleased! The AEM sticker that came in the box was a bit damaged, so I only gained +4 HP instead of the expected +5 HP.
   Mohammad SanfordVerified Purchase

   Rated 5 out of 5

   My tuner recommended this wide band so he could see how things were running at cruise and WOT. The installation was simple and straight forward. I did...More

   My tuner recommended this wide band so he could see how things were running at cruise and WOT. The installation was simple and straight forward. I did have to disassemble the harness from the O2 sensor to pass it through the hole I drilled in the firewall, but it went back together without issue largely. I did have a pin get pushed out which caused the meter to stick on 14.7, but I found where it backed out because I didn't put it back in all the way. After fixing that, it's been great. I am also using a SCT fire wire connection to log the data and everything has worked beautifully.
   Poppy AustinVerified Purchase

   Rated 5 out of 5

   After install this gauge in my 91 Miata turbo to monitor the air/fuel ratio it only worked for few mins then it went to full lean that gauge showed "-...More

   After install this gauge in my 91 Miata turbo to monitor the air/fuel ratio it only worked for few mins then it went to full lean that gauge showed "---". I contacted AEM customer support and Matt Cruz pickup my email and walk me through the diagnostic steps to troubleshot and find out the gauge is defected and I received a brand new gauge set with FedEx return label the next day. Now AEM will be the first merchant I go to for my cars performance electronic needs. Highly recommended.