05 GT vs. lil bro's 06 EVO 9
03-13-2008, 09:49 PM
#92
3rd Gear Member
Join Date: Feb 2006
Location:
Posts: 632
RE: 05 GT vs. lil bro's 06 EVO 9
1200ft above sea level, according to formula on abc15.com density altitude (dew point, pressure, temp)= 2171.8
Norm Peterson (on this forum not Cheers !!) says:
"At a DA of 2172' the air is about 6.8% less dense than standard air at sea level, so assume 6.8% less HP. That's worth about 2.2% in terms of trap speed. How does 106.5 mph at sea level sound? Or an 8.9% density & HP differences vs -658' DAand a 107.2 mph trap speed under those conditions? "
Norm Peterson (on this forum not Cheers !!) says:
"At a DA of 2172' the air is about 6.8% less dense than standard air at sea level, so assume 6.8% less HP. That's worth about 2.2% in terms of trap speed. How does 106.5 mph at sea level sound? Or an 8.9% density & HP differences vs -658' DAand a 107.2 mph trap speed under those conditions? "
03-13-2008, 10:20 PM
#93
6th Gear Member
Join Date: Feb 2007
Location: North Carolina
Posts: 11,302
RE: 05 GT vs. lil bro's 06 EVO 9
See, 106.5 sounds alot more normal to me with your mods. I'm at close to sea level in eastern NC. That maybe the confusion on the EVOs and STIs since turbos are more sensitive to elevation, temps, etc. The STIs and EVOstend to run mid 13s here stock on average
A friend of mine has almost your exact mods (he has shorties and SCT Tune+your other mods) and he runs right beside me at 13.0 with a 1mph slower trap. He gets a better 60 with his tires.
A friend of mine has almost your exact mods (he has shorties and SCT Tune+your other mods) and he runs right beside me at 13.0 with a 1mph slower trap. He gets a better 60 with his tires.
03-14-2008, 12:17 AM
#94
RE: 05 GT vs. lil bro's 06 EVO 9
ORIGINAL: desslok40
1200ft above sea level, according to formula on abc15.com density altitude (dew point, pressure, temp)= 2171.8
Norm Peterson (on this forum not Cheers !!) says:
"At a DA of 2172' the air is about 6.8% less dense than standard air at sea level, so assume 6.8% less HP. That's worth about 2.2% in terms of trap speed. How does 106.5 mph at sea level sound? Or an 8.9% density & HP differences vs -658' DAand a 107.2 mph trap speed under those conditions? "
1200ft above sea level, according to formula on abc15.com density altitude (dew point, pressure, temp)= 2171.8
Norm Peterson (on this forum not Cheers !!) says:
"At a DA of 2172' the air is about 6.8% less dense than standard air at sea level, so assume 6.8% less HP. That's worth about 2.2% in terms of trap speed. How does 106.5 mph at sea level sound? Or an 8.9% density & HP differences vs -658' DAand a 107.2 mph trap speed under those conditions? "
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