Calculator

Common conversions are:

lbs/hour = cc per minute / 10.2
lbs per hour = HP / 2.04
cc per minute = lbs per hour x 10.2
cc per minute = HP x 5
HP = cc per minute / 5
HP = lbs per hour x 2.04

For every 50% increase in fuel pressure, there is a 25% increase in flow. This means that if we list a 200cc flow on a 19# injector, we are testing that at 43.3 lbs. If you are running 55 lbs, then:

55       INC
—— X —— = % increase
43.3    100

or 55 times 100 divided by 43.3 is a 127% increase. Therefore, 200cc times 1.27 is 254cc.

Bar to Pounds Per Square Inch Converter

BAR PSI BAR PSI BAR PSI BAR PSI BAR PSI
1.30 bar 17 psi 1.90 bar 27 psi 2.60 bar 37 psi 3.25 bar 47 psi 3.95 bar 57 psi
1.35 bar 18 psi 1.95 bar 28 psi 2.65 bar 38 psi 3.30 bar 48 psi 4.00 bar 58 psi
1.40 bar 19 psi 2.00 bar 29 psi 2.70 bar 39 psi 3.40 bar 49 psi 4.10 bar 59 psi
1.45 bar 20 psi 2.10 bar 30 psi 2.75 bar 40 psi 3.50 bar 50 psi 4.15 bar 60 psi
1.50 bar 21 psi 2.15 bar 31 psi 2.80 bar 41 psi 3.55 bar 51 psi 4.50 bar 65 psi
1.55 bar 22 psi 2.20 bar 32 psi 2.90 bar 42 psi 3.60 bar 52 psi 4.80 bar 70 psi
1.60 bar 23 psi 2.25 bar 33 psi 3.00 bar 43 psi 3.70 bar 53 psi 5.20 bar 75 psi
1.70 bar 24 psi 2.30 bar 34 psi 3.05 bar 44 psi 3.75 bar 54 psi 5.50 bar 80 psi
1.75 bar 25 psi 2.40 bar 35 psi 3.10 bar 45 psi 3.80 bar 55 psi 5.85 bar 85 psi
1.80 bar 26 psi 2.50 bar 36 psi 3.20 bar 46 psi 3.90 bar 56 psi 6.20 bar 90 psi