when i get my car dyno tuned, will the place have an instrument to measure my air fuel ratio or will i have to buy a wide band O2 sensor for them to tune the car?

 

most dyno's will have a wideband 02 sensor that goes into your tailpipe much like an emissions test. If not they may have a wideband O2 sensor that they could put in your car while tuning. You may need a second 02 sensor bung for this if you are obd1, pre 96'. I'd call the shop and ask though.

 

Any dyno tuner worth his salt has a wideband. If he does not, well