I did a little research on stock dyno numbers. I want to ask you all what is the difference between:

Mustang dyno: some say 220-230
Dyna pack: around 260
Dyno Jet:

Is this true and what is the difference? why do some make less/more power.
This is for a stock car.

 

Different dynos measure in different ways and read differently. It's common knowledge.

 

The best way to use a dyno is to do a base run when your car is stock, then do the upgrades and dyno your car again to see what the difference is. A dyno's purpose is to let u know how much power your car has gained, and also great for tuning the car itself.

A lot of people get hung up on numbers and what not, and there are many threads arguing which dynos are "high-reading" and which are "low-reading." In the end, trap speed in the quarter mile is probably a more accurate method of measuring true power.

 

the car always makes the same power. Its the method that the dynos read...

Just start modding your car on one dyno and stay there, so you can have relatively comparable data...