My friend went and had his car dynoed he has a 98 ws6 with stage 2 heads,598cam,freemods,and underdrive pullys bigger injectors on a dynojet they did 3 runs and the numbers where low 359,361,363 hp so after that we like what the hell
and then they said that is corrected hp let me show you uncorrected 400,401,403hp

i dynoed my car on a diff dynojet i have 2001 ws6 long tube headers and true dual 3inch and a tune and i dynoed 363 so we are scratching are heads

 

Yea something's not right. All dynos read differently for sure, but the corrected (SAE) should still be higher than that. You could take it to the track and see what it traps. That will tell a lot, but something doesn't sound right.

 

Yea I dont think there should be that big of a difference in the numbers. My uncorrected number was 399....corrected 384 and 386.7. I just go with the lower one. With those mods I would expect more especially on a dyno jet since they apparently read higher.

 

Sounds like perhaps someone 'misspoke'.

Normally when you dyno, you can get a dyno printout..As long as it is SAE, (corrected) and has the weather data printed on the bottom..life is good.

I don't know what elevation you are at, or your air temp that day..but ask the place to at least E-mail you the results.

Sometimes, 'uncorrected' or corrected..makes little difference. Up here in the mountains it is a 15-18% difference. I would found out the SAE value.