on what color wire opn the sensor do i connect the meter to. also o2 sensor is the on before the cat. right?
thanks
Luis

 

i hope you dont plan on relying on it for your a/f ratio, it's horribly inaccurate.

 

its at the end of the header, use the white wire.

 

i dont see why people talk down so much on the a/f guages. what do you expect for $60? if you want something totally accurate, of course you go with one that has an 02 sensor of its own... which usually runs 2-3 times more at the least. for what the a/f guage does... its not bad. it gives you an idea.. not an accurate reading.

 

for the money it can't be beat.

something like a wideband 02 will run you $800

 

thanks

 

I have an a/f gauge, and it bounces for lean to rich all the time. the book says it supposed to because the ecu is remapping the fuel system for optimal performance and gas mileage. but ive also heard its not supposed to do it from a proffesional vette shop. the gauge bounces CONSTANTLY, whos right?
gmoore

 

bouncing is normal

 

Which is a better place to hook up the A/F meter? the wire on O2 or wire on ECU?

 

Yeah, I used to have a Autometer A/F gauge. My conclusion is that it's garbage. No matter how much I messed w/ my V-AFC fuel map, it still bounced all over except for WOT, where it would be sorta rich, but not all the way in the Green.

Autometer A/F ratio gauge gets:

 

its not the guages fault, blame the o2 sensor

 

DAMN O2 SENSORS!!!

there

 

yup.. definitely the o2 sensor. the guage just reads off the o2 sensor. it bounces like that... but if you punch the gas... it stays constant at WOT.

 

Agreed

 

so should i connect it to o2 or ecu?