Nistuned BCNR33! What O2 sensors to use?

[Xanatos69]

Hi guys. I have a 95 GTR that I am about to put a nistuned R32 ECU in. I have Zirconia M18X1.5 thread stock sensors. Is there a titania sensor with this thread I can use or do I need adapters? If I need adapters where can I order them from? Thanks

[dsmart]

I am also interested in the O2 sensors to use for my Bcnr33. I have a nistune setup waiting to go in and the only remaining question mark are those sensors. My research so for has been inconclusive as some say you need to change to the titania type. Others say you need to change the wiring on the zirconia and finally some say you dont have to change anything.

[actionbstard]

I know the Bosch Z32 na 90-95 (vg30) are cheaper then the NTks oem ones

[Xanatos69]

I have decided to buy some thread adapters from a online performance shop in California. 50 bux for 2 shipped. Now I am trying to buy some 12MM titania sensors as 18mm are not used in north america. I installed my nistune ecu in my car with the stock sensors and they read 0v and thee car idled rich (12:1) on my wideband so I pulled it until I figure this out. I also grounded Pin 115 inside the ECU as suggested on the nistune forum to get the heater circuit to work with the new sensors. I'm not sure if this is all the wiring mods that need to be done or not.

[dsmart]

Please update this when you figure out if the new 02 sensors fix the issue

[Xanatos69]

88 300zx Turbo titania sensors have been installed for a over a week with no problems. swapped the pins around and used original sensors connector housings.

[dsmart]

Thanks for the update, ive been thinking about this lately so this helps out. Ive been considering just buying a LC-1 wideband to feed the signal to the ecu and use in nistune. If I can do this it avoids buying 2 new sensors and also gives me a wideband signal to use. Any thoughts on this idea??

What did you do with the pins...like what wire on the new sensor matches up with the wire in the original connectors?

[Xanatos69]

I looked into that because I have an LC-1 but they can't simulate a titania sensor because they change resistance not voltage. Still highly recommend the LC-1 Though! I threw out my printout I used. You should be able to find a r32 wiring diagram on the forums which will make it clear. The color code for titania sensors are Black = Signal, Red is reference In/ Heater+,and White= Heater ground. Grounding Pin 115 inside the ECU, I believe completes the heater circuit. Hope this helps.

[dsmart]

Thats a shame, I was hoping it would be the perfect solution. I suppose I could run 1 OEM sensor and run the Lc-1 in the other downpipe. I think ill probably just get the R32 sensors and be done with it. Anyways thanks for the info, how much did you pay for the 300zx ones?

[Xanatos69]

$70 Ea for Bosch at local autoparts store. Don't forget you'll need thread adapters to screw them in as they are smaller than the R33 sensors.

[Wedge]

Arent the 90-94 Maxima o2 sensor the same as RB26 ones ?