I have been reading all these dyno results and most if not all are uncorrected results?

So how can we compare this tune to that tune, or this upgrade to that when uncorrected numbers will vary based on the conditons of the dyno shop(air temp, etc)?

Is that not the reason why dyno numbers are usually posted SAE corrected so that you can compare dif results when they are all corrected to standard temp and pressure.

One car can dyno in 40 degree air and make x numbers on the dyno STD, and the same car can be done in 85 degree humid air and make less power even though the car has the same mods and tune, but was inhaling worse air?

the correction factor on car A maybe under 1 and car B over 1 if they were to be corrected, but at least that way apples to apples can be compared.

Just a thought.

 

thats why dynos are tuning tools, not end all answers

 

The end number is virtually useless because no two dynos will really ever give the exact same numbers.

If you want to see how good one tune is compared to another you need to look at the gains done on the same dyno pre tune and post tune.

 

yup, heck you can restrap the car and get different results.