I understand the principle of both but my question is this.
A mustang dyno gives u hp readings as if u were driving on the street.
A dyno jet gives u a high load reading.

If i Mustang Dyno tune my car then do 1 run on a Dyno jet will it give me a higher Horsepower reading ? And which 1 will be the true hp of my car ?

 

bump cuz i have the same Q

 

Neither will be the true horsepower of your car, because they both have different correction factors, design of rollers and software, and you will be tuning on separate days and with different conditions...

Read the August 2004 Sport Compact Car arcticle : "what's wrong with your dyno" for a complete explanation...

 

Mustang Dyno is said to be more accurate, and most tuners prefer this dyno because you can change the load to tune for driveability.

Dyno Jet is popular for publication cuz it yields inflated numbers.

 

thanks for the reply fellas