the way a dyno works (dynojet) is that we place your car on a roller. we hook up an o2 sensor to your exhaust for the wideband (it will tell us what air fuel ratio your car is running) and then we connect a wire to your ignition signal so we can get a tach reading.

Now, the dyno will tell me if your car is misfiring, running too rich, running to lean, if you have blow by if oil comes out the back when we are accelerating. but thats about it.

I assume from your avatar you have a honda? We charge $100/hr to tune a car on the dyno. Make sure you have something to tune with like a VAFC or SAFC or if you want you can PM me and look at getting turboedit or Uberdata.

the number to our shop is in my signature.