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Blue wire mod

Old 05-15-2003, 02:57 AM
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Join Date: Apr 2003
Posts: 2,580
Default Blue wire mod

So I have a 91 hatch with a b16 and I didn't pass emisions (in Chicago). So I decided to install my vafc now instead of with the turbo. The question is what the hell is the vtm wire ( blue wire) for. Also, will doing the blue wire mod give a cel or make the vafc not work correctly. The wiring diagram from apex website didn't say to use it for my car/motor but it also didn't get one of the wires right.
Thanks for the help kids.

fork is offline  
Old 05-15-2003, 04:44 AM
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Join Date: Dec 2002
Posts: 48
Default Re:Blue wire mod

From what i can remember the blue wire (in the case of honda's) can be used as an auxilary input which you can connect to the O2 sensor. This way you can monitor the O2 sensor voltage. It won't tell you if its running lean or rich untill you calculate what the voltage reading actually equates to.

cel_912 is offline  
Old 05-18-2003, 10:33 PM
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Join Date: May 2003
Posts: 1
Default Re:Blue wire mod

sort of a a/f gauge mod
I3oOsT is offline  
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