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The mkiv Supra Owners Club

O2 sensor wiring for afr gauge


TurboBrett

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i have an Afr gauge i bought for tuning the mini but never made it onto that, I'm going to fit it to the supra, am i OK to take the signal from the diagnostic port wiring or is it best to take it from the sensor loom (by the turbo's),

 

will do step by step pics aswell if i remember,:)

 

cheers, brett

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If it's a narrowband gauge, take it from the door light or the clock or the throttle position sensor for all it'll help you monitor the car ;)

 

But the diagnostic port Ox pin will indeed give you the narrowband voltage. Just don't use it to tune the car as "rich" on a narrowband can be 13.5:1 which is "Lean" when you are on boost.

 

-Ian

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yes it is a narrow band, and its all fitted i pulled the sensor signal from the ecu loom, i dont intend on tuning the car with it, just some cool lights too look at;)

 

i did successfull tune the mini on narrow band, i got the needle profile almost spot on through a trial and error method, then took it to a rolling road to have it tweeked under load

SU carbs are so simple when you understand the basics, ecu's are not simple for me:(

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