I just found out that the DEFI D-Gauge I bought relies on the factory o2 sensor. Should I trust it? Do you guys think it would work just as good?

I cant find anyone to Dyno my car today anyone know of a dyno in the Chino So cal area

 

factory o2 is a narrow band which means u cant use it w/ FI where you will need to run under 12 afr and narrowband cant read it accurately (or at all). Get a AEM wb gauge, thats the fastest and most accurate i've ever used except some pro widebands but they are not needed if u r not a ems tuner.

 

just bought an AEM wideband a GT Motorsports I will plug it in

Thanks

 

excellent choice.