diff --git a/precision_gas_mixer_H2_N2O.asm b/precision_gas_mixer_H2_N2O.asm
new file mode 100644
index 0000000..9287a1c
--- /dev/null
+++ b/precision_gas_mixer_H2_N2O.asm
@@ -0,0 +1,86 @@
+#       H2/N2O Volume Pump Gas Mixer
+
+# Uses 2 Volume Pumps instead of a Gas Mixer
+# No need to worry about temperatures throwing...
+#...mix ratios off. -Prevents over pressure.
+# You will need 1 Pipe Analyser and 2 Volume Pumps.
+
+alias H2N20Analyser d0
+alias PumpN20 d1
+alias PumpH2 d2
+
+# ----------Change desired values here-------------
+# Currently set for H2/N2O fuel mix.
+# If you adujst the max tank pressure then you must
+#...modify the the settings below that accordingly.
+
+define N2ORatio 0.50 #Set desired N2O ratio
+define H2Ratio 0.50 #Set desired H2 ratio
+define MaxPres 700 #Set desired tank pressure
+define MaxH2Pres 680 #Keep below MaxPres
+define MinTransPres 650 #Keep below MaxH2Pres
+define MinPres 600 # Set tank minimum pressure
+define PumpHighSetting 10.0 #H2Pump max setting
+#--------------------------------------------------
+
+alias N2O r0 #Ratio
+alias H2 r1 #Ratio
+alias Pres r2 #Pressure
+alias H2PumpSetting r3
+alias CurrentN2OSetting r4
+alias CurrentH2Setting r5
+alias LowH2Setting r6
+
+checkN2O:
+s H2N20Analyser On 1
+l H2PumpSetting PumpH2 Setting
+mul CurrentN2OSetting H2PumpSetting 0.75
+s PumpN20 Setting CurrentN2OSetting
+l N2O H2N20Analyser RatioNitrousOxide
+blt N2O N2ORatio n2OPumpON
+bgt N2O N2ORatio n2OPumpOFF
+j checkH2
+
+checkH2:
+l Pres H2N20Analyser Pressure
+bge Pres MinTransPres setLOW
+blt Pres MinTransPres setHIGH
+resumePresCheck:
+l Pres H2N20Analyser Pressure
+bge Pres MaxH2Pres h2PumpOFF
+h2RatioCheck:
+l H2 H2N20Analyser RatioVolatiles
+blt H2 H2Ratio h2PumpON
+bgt H2 H2Ratio h2PumpOFF
+j checkN2O
+
+n2OPumpON:
+s PumpN20 On 1
+j checkH2
+
+n2OPumpOFF:
+s PumpN20 On 0
+j checkH2
+
+h2PumpON:
+s PumpH2 On 1
+j checkN2O
+
+h2PumpOFF:
+s PumpH2 On 0
+j checkN2O
+
+pumpsOFF:
+s PumpN20 On 0
+s PumpH2 On 0
+j checkN2O
+
+setLOW:
+abs CurrentH2Setting PumpHighSetting
+mul LowH2Setting CurrentH2Setting 0.5
+s PumpH2 Setting LowH2Setting
+j resumePresCheck
+
+setHIGH:
+s PumpH2 Setting PumpHighSetting
+j resumePresCheck
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