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Registered
Join Date: Jan 2003
Location: Idaho Falls, ID
Posts: 1,199
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Use the following chart to help guide your way to maximum power!
METER READING FULL THROTTLE AIR/FUEL RATIO
.000 17.0:1
.100 17.0:1
.200 16.0:1
.300 15.5:1
.400 15.0:1
.500 14.7.0:1
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1
Actually many vehicles will cycle the full range of the sensor from below 100mv to over 900mv when at cruise rpm. The critical reading is at wide open throttle under full boost this is where you want to see a steady 900mv, some tuners will lean things out a little bit and gain a few extra hp, but 900mv provides a small margin of safety. Most current OEM systems run 900mv at full throttle. The air/fuel ratio's compared to the sensor voltages on this chart may be off a little, Vortech claims 900mv translates into 11.5:1 GM scanner readings claim 900mv equals 12.5:1 . The world may never know!!!!!!!
__________________
75 914 - Undecided.
80 931 - Gone, but not forgotten.
72 914 - old toy- sold.
And a whole bunch of German scrap metal shaped like 924's.
Old enough to know better, and stupid enough to do it anyway!
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