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1992 3000GT VR4
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2,098 Posts
92 harness would have the rear O2 connector at the fuel rail (right bank fuel rail)
The front O2 would connect at the top alternator bracket for reference placement
The rear O2 (left bank) wire would be about 2 foot in length so it can reach the fuel rail to connect into the harness
The front 02 (right bank) would have a shorter length wire connecting just above the alternator

With both O2 sensors going into the down pipe

This needs to communicate with the ECU
MAF related to what the O2s are seeing to

Instead of having one bank running healthy and the other bank getting drowned with fuel

Running wideband futher down in the collector pipe 5 to 6 inches back from where both of your down pipes collect to read both banks
 

· Registered
1992 3000GT VR4
Joined
·
2,098 Posts
Wideband placement is important to the angle of which the sensor end needs to point at a downwards angle inside the exhaust pipe
For contaminants purposes
Cold starts / intake cleaners / seafoam etc...

Welded in bungs / most aftermarket exhaust already have these installed with a plug bolt
 
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