Ok so i have to customize a ford focus header to use on my engine(jdm protege motor) and it has 2 O2 sensor bungs... i noticed even on my genie header that the bung is only on 2 of the cylinders so how good of a reading would that be?? Anyways i was wondering what would happen if i wire up another O2 sensor to the origanal plug( actually having 2 sensors)??
Would it give a better reading or make it go all out of wack??
adding a O2 sensor
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ModMX3 - (Carmaster2005)
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Your ecu would always use the highest voltage of the 2 sensors which would make you run either more rich or more lean then you currently are. Reason is because your ecu is only designed for 1 o2 sensor input (up front). If i where you I would check to see looking at the spark plugs which cylinders seem to be in the best condition and use the o2 that reads those 2 cylinders.
Apexi Safc 2 ,Timex Boost-Temp-Oil Gauges, Stage 1 Performance clutch, 8.5 mm Magnacore plug Wires,2.5 inch exhaust, Cold Air Intake , Short Shifter , High temp rotors & Ceramic pads to slow it all down !
why not just use the proper header and have the car run properly?
95 rs with custom short ram air, b&m short throw shifter, probe 2.0L header with 2 1/4" exhaust all the way back, catco high flow cat, apc high flow muffler with 4.5" tip, accel 8 mm wires, blaze red, cf altezzas, gun metal 17" mr7s, slotted cross drilled rotors on the way with hawk hps pads, red and white interior, other then that its stock.