sae dyno #'s
06-02-2010, 11:57 AM
#1
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sae dyno #'s What does the sae 1.00 mean. I seen diff dyno sheets that say sae 1.05, 1.02, 1.03, 1.00 what does it mean. It says it under the air/fuel chart where it shows temp, hum.
06-02-2010, 06:17 PM
#3
That's the correction factor for the temperature/pressure. SAE corrects to 77 degrees and zero humidity if I remember right so if the outside temp is higher then the correction factor will be > 1.0. So if it's 1.03 as an example and the dyno measured 300RWHP then it multiplies 300 x 1.03 to spit out 309 SAE corrected HP.
06-02-2010, 07:00 PM
#4
Its purely a multiplcation factor that it multiplies your uncorrected power by to get corrected data. Its based off of many factors including temp, humidity, vapor pressure, baro pressure, etc.
.98 = Subtracts 2% to correct for conditions
.99 = Subtracts 1% to correct for conditions
1.00 = No correction needed
1.01 = Adds 1% to correct for conditions
1.02 = Adds 2% to correct for conditions
STP/STD does the same thing, except its 4% higher than SAE.
.98 = Subtracts 2% to correct for conditions
.99 = Subtracts 1% to correct for conditions
1.00 = No correction needed
1.01 = Adds 1% to correct for conditions
1.02 = Adds 2% to correct for conditions
STP/STD does the same thing, except its 4% higher than SAE.
06-02-2010, 10:12 PM
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I dynoed my car today. I got std #s and sae#s. I was looking at other dynos sheets on tech. I saw they had diff sae #'s. So the dyno changes it by itself. Ok on my dyno sheets the sae was 1.00 and the std was 1.03. On the std that's 1.03+4%. My #s are 389hp 391trq sae 398hp 400trq std. Mods are lq4, stock 317 heads, ls6 intake, lid k&nfilter, hooker lt, ory no cats, magnaflow cb with cutout open, 25% udp, hotcam.
Last edited by unknown pontiac; 06-02-2010 at 10:21 PM. Reason: forgot mods
06-02-2010, 10:27 PM
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I don't have a scanner to post up the dyno sheets. I started to lean out on the fuel. I went up to 14.08 from 13.0. If I fix that will I hit 400hp, also will my car mess up from runing lean or am I ok for now.
06-03-2010, 08:27 PM
#7
From 14.0 you can pick up a couple HP by richening it back up. Most of the time I've seen these LSx motors produce MAX HP running them close to 13.5 afr or 0.92 Lambda. So running it leaner than that is going to probably hurt power more than it running 12.5 afr. But really on the dyno, once you get in the general area of fueling the power change from 14.0 afr to 13.0 afr is minimal on most setups.
Alot may disagree with me but it's really hard to screw up a NA motor by running it lean. Hell look at the GM trucks staying in closed loop (14.68afr) for eternity lol
Alot may disagree with me but it's really hard to screw up a NA motor by running it lean. Hell look at the GM trucks staying in closed loop (14.68afr) for eternity lol
