Hondata

I bought a Bosch 17025 which is the sensor from the AEM wideband kit, and I can't figure out the what wire is which. Seems like it should be simple but the instructions for wiring the sensor directly to the S300 ECU are in layman's terms like "positive wire," "negative wire," and "signal wire" while ...

Spunkster wrote: Fri Nov 14, 2025 10:47 am You cannot use a narrowband to properly read AF ratio.

Okay, thanks.

Spunkster wrote: Fri Nov 14, 2025 10:10 am Do you have a wideband?

No wideband. I assume I am using the factory o2 sensor to get those readings..

I'm new to Hondata and tuning and recently put a P28 S300 in my 1992 Civic Si with an OBD1 B16A. Car feels great but I've got something weird going on with the AFRs and idle. I loaded the stock P30 EG6 map and turned off the knock sensor. TPS is set in Smanager and timing is also set perfectly.

I ...