AEM Uego Gauge (30-4110NS) and Bosch Wideband Sensor (17025) Kit

I had to run one for tuning on an older WRX since my car couldn't handle a newer high bit rate O2 sensor. This is the unit of choice for a lot of tuners and owners who have to go this route. I haven't found any problems with it and will definitely be getting another one when the times comes to tune my Rat Rod and Hot Rod builds.

Came as expected. Everything worked out of the box. Installation was smooth. Quality product

Purchased this kit from MAPerformance. Discovered after the fact that it is a Gauge-only kit from AEM (from the 30-4110NS part number, "NS" stands for "No Sensor" from AEM), and they throw in some garbage, non-AEM wideband O2 sensor, that didn't even work right out of the box. I contacted AEM, where they verified the part number for the sensor I had been given was NOT an AEM product, so they couldn't do anything about it. When I contacted MAPerformance, they said I need to contact AEM. After explaining that I already had, and it wasn't their sensor to warranty or troubleshoot, MAPerformance said, "we're sorry they won't honor they're warranty, but as it is a wear item, we don't warranty it either." They refused to send a replacement free of charge, and their compromise was to let me purchase another O2 sensor from them at dealer cost. After having sent me a bad sensor in the first place, and then expecting me to pay more for another one, I refused. I wonder what they would have offered if the second one turned out to be bad as well. Very poor customer service. I explained 3 times that it wasn't an AEM sensor and they had nothing to do with warrantying it, and the people at MAPerformance still clinged to this belief that it was AEM's problem, and I should just give MAPerformance more money for more daft parts. DO NOT BUY FROM MAPERFORMANCE! They are running a scam, and I will never buy anything from them again.

I love the aem series gauges the precision of its readings is phenomenal. Great seller item was shipped immediately and was delivered on time! Great product and great seller will buy from again!

Works as they should AEM general weirdness but reads well and functions

Like others on here, the O2 sensor was not a Bosch unit and only lasted a few days. I bought a Bosch 17212 at an auto supply place and all is well. AFR itself works well and is very helpful in tuning dual carbs on a blower motor.

Great price, fast shipping, and comes as discribed

Gauge itself works great. Sensor only lasted a week, don’t know if that’s genuine Bosch or not. Replaced it with a Bosch sensor from a trusted local supplier, works great now.