converting KPA to PSI alot?
01-20-2013, 07:27 PM
#1
converting KPA to PSI alot? i found while tuning turbo cars how most of them are metric, i converted the numbers alot.
ended up writing this program for personal use, figured some of you might like it...
http://www.sloppymechanics.com/apps/KPAtoPSIcalc.zip
give it a whirl and let me know what you think.
ended up writing this program for personal use, figured some of you might like it...
http://www.sloppymechanics.com/apps/KPAtoPSIcalc.zip
give it a whirl and let me know what you think.
01-21-2013, 11:44 AM
#5
good information man.
at the track, when im not at my computer i use a quick and dirty phone calculation on my phone to get close.
if the kpa is 168, subtract atmosphere( i use 100 kpa) and then multiply by .145
ie, 68 * .145
if I know the boost, just mulitply by 7 to get the number
ie 9.866 * 7
at the track, when im not at my computer i use a quick and dirty phone calculation on my phone to get close.
if the kpa is 168, subtract atmosphere( i use 100 kpa) and then multiply by .145
ie, 68 * .145
if I know the boost, just mulitply by 7 to get the number
ie 9.866 * 7
01-21-2013, 11:30 PM
#6
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1 psi = 6.8948 KPa. i made a boost gauge pid in hptuners that did the calc automatically in real time. take the actual intake pressure and minus the baro pressure to get your boost.
easy way to do it take for example (168kpa / 6.8948) - 14.7 (or use a baro sensor pid). set your new gauge to psi and done. i use 14.7 because thats the avg for sea level. if you use the baro sensor just do 168kpa - [baro pid in kpa] / 6.8948 = boost
easy way to do it take for example (168kpa / 6.8948) - 14.7 (or use a baro sensor pid). set your new gauge to psi and done. i use 14.7 because thats the avg for sea level. if you use the baro sensor just do 168kpa - [baro pid in kpa] / 6.8948 = boost
01-22-2013, 07:59 AM
#7
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1 psi = 6.8948 KPa. i made a boost gauge pid in hptuners that did the calc automatically in real time. take the actual intake pressure and minus the baro pressure to get your boost.
easy way to do it take for example (168kpa / 6.8948) - 14.7 (or use a baro sensor pid). set your new gauge to psi and done. i use 14.7 because thats the avg for sea level. if you use the baro sensor just do 168kpa - [baro pid in kpa] / 6.8948 = boost
easy way to do it take for example (168kpa / 6.8948) - 14.7 (or use a baro sensor pid). set your new gauge to psi and done. i use 14.7 because thats the avg for sea level. if you use the baro sensor just do 168kpa - [baro pid in kpa] / 6.8948 = boost
just a heads up.
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01-23-2013, 03:23 PM
#18
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it doesnt matter one bit. 50kpa is = ~7psi. there is still pressure in the intake its just lower then the atmosphere thus it is a vacuum. you can measure it inches vacuum or whatever you want, its still the same amount of pressure no matter how you want to describe it. you can convert between all three units extremely easy
01-23-2013, 03:25 PM
#19
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here is a post right here on tech i found in 1 second on google...
https://ls1tech.com/forums/pcm-diagn...i-kpa-bar.html
https://ls1tech.com/forums/pcm-diagn...i-kpa-bar.html
Code:
Pressure Comparison Chart Inches (vac) PSI kpa bar 34.6 -14.5 0 0.00 30 -12.6 13 0.13 25 -10.5 28 0.28 20 -8.4 42 0.42 15 -6.3 57 0.57 10 -4.2 71 0.71 5 -2.1 86 0.86 0 0 100 1.00 2 114 1.14 4 128 1.28 6 141 1.41 8 155 1.55 10 169 1.69 12 183 1.83 14 197 1.97 16 210 2.10 18 224 2.24 20 238 2.38 22 252 2.52 24 265 2.65
