R32 Gtr Single Turbo Conversion On Rb26.... Oxy Sensors......

[Black R32]

with the single dump pipe/front pipe. should i tap two holes for the oxy sensors or just splice it so i only use one oxy sensor?

[N I B]

Run both sensors and you will have no trouble.

[paulr33]

i would expect both to achieve the same goal?

[R31Nismoid]

gotta use both of em, from what ive seen, singles that keep the O2's all have 2 plumbed into the dump

[rob82]

Yes definately need both sensors as the front cylinders trim independantly of the rear three cyinders. If you splice them together you may get undesirable condtions where the front three cylinders enrichen the mixtures while the rear three cylinders are trying to enlean mixtures and they are both using the same sensor. Have seen a similar situation with a GENIII that had the 02 sensors around the wrong way so one bank went extremely lean while the other went extremely rich.

Edited April 7, 2006 by rob82

[paulr33]

ah yes my bad

the r32 sensors are different front and back

[Black R32]

thanx heaps

[2443]

R32GTR Oxy sensor is not much concerned for the feedback to ECU. If you can make ECU as well, you do need Oxy sensors. R33 and 34GTR are difficult though...

[Amaru]

I have been running with a stuffed o2 sensor (reads 0.01v all the time) for over a year now, havent really noticed any bad side affects.

Just to hijack the thread a bit, is there any alternative for genuine Nissan sensors? Someone said the EF Falcon one is identical and half the price.

[GTR-Ben]

I spliced mine in. Running an aftermarket ecu though.

I have seen people use 2 of the same O2 sensors on a stock GTR just change the plug and this seemed to work fine.

I thought they had different plugs so the stock ECU always knew which was the front and which was the rear, but the sensors were generally exactly the same?

They only help with fuel economy anyway, not WOT conditions so how could it hurt the engine?