Anyone have a standard MY99 or similar car know what AFR they are running at under full load?

I have use Romraider and logged a 0.91 volts max on the O2 sensor which would put it around about 13:1. I realise the sensor isn't accurate to more than 0.2V but I seem to remember some people talking about 0.975V and that is a significant difference in AFR.

I know I really need a wide band... but was just wondering if anyone thought that it might a be a bit lean?

What AFR should I be aiming for, for a standard car albeit having a decent exhaust.

 

you need a wideband, ignore the narrowband.
it's likley to be mapped to around 10.9AFR at full bore, maybe a touch richer.
I have fuel maps but not on me at the moment.

 

Ok cheers.

I was just a little concerned when I saw that reading. I have a very old dyno plot (from before I owned the car) with it around the 11:1 but I wasn't sure if that was correct then.

Taa. Mind at ease now...