got my air/fuel guage installed...

but where is the reading sappose to be?

what ive notice is that its reading stoich but at full throttle the reading drops all the way down to lean...doesn't it sappose to read rich at full throttle?

could this be the reason why i failed smog last week? maybe i need to replace my o2 sensor?

i took it in the shop today and they replace the cap and rotor, they told me to drive for at lease 30 miles before i take it in to get it smogged again...

hmmm plz help...

 

Is the car stock?
Different ECU or other stuff?

 

yea the car is pretty much stock

cold air intake, ngk sparks plugs and ngk spark plug wires

 

wideband ftw