Do you need to necessarily have an "actual" 02 Sensor to wire up an A/F gauge?. If one were to use simulators could the A/F gauge still be wired up?

 

since the O2 sims trick your comp into getting a signal, the gauge will work, but you wont get the readings that your car is producing....

 

I was kind of figuring that.... hmmm no way to get around the pseky 02 sensors.

 

if you know someone with a welder, drill a hole in your y-pipe and weld a nut there so you can screw in an o2, then connect your gauge there....

 

Whill the 02 Simulators help out with emissions or gas mileage like the actual 02's will. Or do they just take the SES light out?

Or in other words...Do they simulate positive information to the computer simulating a good 02 reading....or do they just take out the SES light.

 

They supply the computer with about 1.9-2.3 volts, which is about 14-14.7:1 a/f ratio...which keeps the ses light off, the value doesn't change...

 

sorry i wrote that wrong its .2-.7 volts, it works on a 1 volt system not 5v....anything under .20v means your running lean above .7v means your running rich

 

sims go for the after cat o2s, a/f gauge goes into the header o2s