Hello,
Earlier this year I was dyno tuned using my predator. When this is usually done, is the stock tune replaced with the dyno tune?

I'm curious because when I hook up my predator is reads like the truck doesn't have a custom tune on it even though the custom tune is definitely on the ECU. ( I can tell by the different shift points). The truck runs strong and everything..

Thanks..

 

Not sure about the predator but the XCal2 holds the stock tune in it so you can return to stock if necessary, even if it’s dyno tuned. Your stock tune is probably in your tuner, that’s how most of them work

 

yes the predater holds the stock tune in it. to see what all is happening you will have to find out what the fuel,timing,and 02 sensor readings are from stock to tuned and watch them.