Base Lined my Stock C7 7spd in VA
Pro
Joined: Dec 2014
Posts: 529
Likes: 35
From: VA
As racerns already stated....the 427whp was using the STD correction on the DynoJet Dynometer. There are less restrictions using STD over SAE. STD corrected dynos usually read ~ 4% higher than SAE (which is what more people dyno with due to being more realistic with real world factors). Using that math...it actually equals out to be about 411whp with the SAE correction (411 x .04 = 16.44, 16.44 + 411 = 427.44)
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Melting Slicks
Joined: Oct 2002
Posts: 2,896
Likes: 349
From: Smithfield VA
As racerns already stated....the 427whp was using the STD correction on the DynoJet Dynometer. There are less restrictions using STD over SAE. STD corrected dynos usually read ~ 4% higher than SAE (which is what more people dyno with due to being more realistic with real world factors). Using that math...it actually equals out to be about 411whp with the SAE correction (411 x .04 = 16.44, 16.44 + 411 = 427.44)
It is really just how the Dyno operator chooses to display the data. A Dynojet measures it the same no mater what correction factor is applied to the results. STD correction will always give you higher numbers (than SAE) and that tends to make people happier.
Thread Starter
Late Model Domestics
Joined: Oct 2007
Posts: 1,548
Likes: 46
From: Virginia Beach VA
Ill print the graph and post it tomorrow.
SA:
This is from a magazine article on "dynojet" dynos.
SAE j1349 correction:
29.23 in/hg.
77 degree temp
0 percent humidity
Standard correction:
29.92 in/hg.
68 degree temp
0 percent humidity
What this all means is that "Standard" will give you 2.6 percent better numbers (very popular for the import crowd). The example the magazine gave was a Vette making 412 (SAE corrected hp). With the Standard correction it made 423. All that you will have to do is multiply your "Standard rwhp" by .974 This should equal SAE (the one everyone uses). Up here in the great white North (Washington) the temps are in the 40-50 degree area, along with 29.9-30 in/hg. So, our numbers are actually corrected down from what it made at the rear. Usually, 96-97 percent of actual posted numbers. If you dyno when it's a hotter temp or higher altitudes the numbers will usually correct up to equal the desired temp, humidity and pressure of the correction factor.
SA:
This is from a magazine article on "dynojet" dynos.
SAE j1349 correction:
29.23 in/hg.
77 degree temp
0 percent humidity
Standard correction:
29.92 in/hg.
68 degree temp
0 percent humidity
What this all means is that "Standard" will give you 2.6 percent better numbers (very popular for the import crowd). The example the magazine gave was a Vette making 412 (SAE corrected hp). With the Standard correction it made 423. All that you will have to do is multiply your "Standard rwhp" by .974 This should equal SAE (the one everyone uses). Up here in the great white North (Washington) the temps are in the 40-50 degree area, along with 29.9-30 in/hg. So, our numbers are actually corrected down from what it made at the rear. Usually, 96-97 percent of actual posted numbers. If you dyno when it's a hotter temp or higher altitudes the numbers will usually correct up to equal the desired temp, humidity and pressure of the correction factor.
Thread Starter
Late Model Domestics
Joined: Oct 2007
Posts: 1,548
Likes: 46
From: Virginia Beach VA
Melting Slicks
Joined: May 2014
Posts: 2,611
Likes: 89
Thread Starter
Late Model Domestics
Joined: Oct 2007
Posts: 1,548
Likes: 46
From: Virginia Beach VA
Have you driven the New Z yet?