chezta_b20vtec on Dec/07/07 said:
i'm not sure.. how can i tell if my gauge is narrow or wideband.. your talkin about the gauge though right? or you mean the sensor..?? i have a high flow cat and it looks like there's no slot fot o2 sensor..thanks.
Well, the gauge and sensor should both technically be wideband.
If you just picked up an A/F gauge, and hooked it up to the stock O2 wire, then it is just a narrowband gauge, as it uses a small voltage range, and can't really tell you just how rich, or just how lean you are running. The gauge needle will bounce all around, especially if you tap the throttle.
With a wideband setup, you would put a separate (or straight replacement, depending on model) wideband O2 sensor into your exhaust. Then, your gauge would also need to be specifically for wideband use to read the much larger, and more accurate, voltage from the WBO2 sensor.
Do you know what model of gauge you have? Does it have any markings on it? Did you just tap into the O2 wire on the ECU, or did you install a wideband O2 sensor?