I was just wondering if anyone knew how accurate the header O2 sensor is for relaying an a/f reading. Im about to get on spray and instead of dropping 300 bucks on a wideband o2 system, i figure i can one of the 80 dollar gauges that tap into your stock sensors since im not gonna be spraying but at the track maybe once a month.

Thanks

 

well i'd say it's probably pretty accurate sense toyota relys on it to tell your ecu which fule map to use.

 

yeah Im just kinda worried its not going to be able to read high enough