New cars, old cars and horsepower ratings.

[art leong]

Originally Posted by KRatcliff

If you rely on the ECU to tune the car going down the track then you will be slower. The ECUs are not capable of reading, correcting, and optimizing the tune within the few seconds of the pass IMHO.

Of course, I am still learning and have a long ways to go.

I have heard that in order to do this a very very very expensive O2 sensor is needed. Almost as much as the cost of the car. And you would need one for each cylinder.