STD and SAE
06-09-2005, 11:07 PM
#2
4th Gear Member
Join Date: Feb 2005
Location: houston, tx
Posts: 1,660
RE: STD and SAE
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).
in closing...stay away from those STD's
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).
in closing...stay away from those STD's
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