I had my car dynoed today to see if my a/f was where it needed to be. My air/fuel was at 13.0 consistently on all 3 runs. It was on a dynojet at a very experienced place. They gave me 3 diff readings-
sae-hp 275
trq 289

std-hp 284
trq 299

uncorrected- hp 292
trq 307
It wasabout 57 degrees here in portland w/43% humidity.all pulls were done in 4th gear. I currently have a 5spd gt with jlt2 cai, brenspeed 92 octane, slp lm's and 4.10 gears. I don't know the diff between the 3 diff readings, can any one explain what one I go by? They also took the a/f reading from the tail pipe so I might be even a little rich possibly thanks for any help, Brad.

 

I think when I did my pulls on the dyno I did them in 3rd. Why'd they do yours in 4th?

 

I believe 4th gear is the gear you are supposed to do it in. I think that is because 4th gear is 1:1, so most auto's I believe use a special tune to lock it into 4th gear so it wont go into o/d. Anyway only thing I have heard is 4th. good luck

 

You usually go by the corrected numbers. Those aren't necessarily bad numbers, either. The gears will offset the numbers a bit. How much time was your cool down period between runs?

 

Use the SAE correction to compare with others cars.
I assume it is a manual (all trans. are 5sp.)
Your numbers are not that bad for 4.10 gears, some cars are lower than others.
The A/F is fine.
.
The uncorrected is what the car is putting out at that place and time, but you cannot compare it to another car.
The uncorrected reflects the weather, like the lower air temp.