Want a maggie alternative?........
03-10-2010 | 01:32 AM
#41
The Altitude Correction factor is correct from Sealevel to Colorado for Supercharger setups, Not so sure about Turbo's as they make their own air.
However 1 catch. You need to correct for the boost level.
An experiment was done 10 years ago with a local Procharged 383 a4 Trans Am.
Clay put down 610 RWHP with 9psi of boost, through an auto, 383 Stroker, corrected for this altitude.
1 week later, without any mods, maybe a tweak in his WOT Fuel tables to make sure he didnt run lean, timing remained the same, they dynoed at Sealevel. Car put down 611RWHP, but the boost was recorded at 11 to 12psi.
More or less there's your difference. Same correction, but add about 20% to the boost levels and you'll get a close reading Sealevel to our High Altitude.
Clint
However 1 catch. You need to correct for the boost level.
An experiment was done 10 years ago with a local Procharged 383 a4 Trans Am.
Clay put down 610 RWHP with 9psi of boost, through an auto, 383 Stroker, corrected for this altitude.
1 week later, without any mods, maybe a tweak in his WOT Fuel tables to make sure he didnt run lean, timing remained the same, they dynoed at Sealevel. Car put down 611RWHP, but the boost was recorded at 11 to 12psi.
More or less there's your difference. Same correction, but add about 20% to the boost levels and you'll get a close reading Sealevel to our High Altitude.
Clint
