96 GTS Rear O2

[BlueGTS]

Does the car care if I disconnect the rear O2 sensors? I am guessing they were not used until later years. I ask because, I want to use those bungs for widebands if the car is not really using those sensors. If they are, I will have a couple bungs welded on my collector. Thanks

 

[Ron]

Don't know myself, but would you want the widebands pre or post cats?

 

[Simms]

Pre. Weld in a new **** for the wideband.

 

[BlueGTS]

No cats so that will not be much of an issue. I just figured the bungs were already welded on the Corsa and I could just use them.

 

[Simms]

Sorry, I read too fast.

 

[Ulysses]

Using the down stream bungs will cause a delay in the readings between what the up stream and the down stream sensors read. The gasses will also cool before they hit the down stream sensors and may cause inccurate readings.

 

[BLUESNAKE367]

Why couldnt you cap off rear 02 sensors outlets in rear, and plug in simulators to the wiring harness. available through Roe Racing, would that work?

 

[hemibeep]

o2 caps are also available for the rear sensors from JEG's and summit at around $8 each

 

[Achilles99]

o2 caps are also available for the rear sensors from JEG's and summit at around $8 each

I've bought them for $1.50 at Muffler shops...

 

[Daniel Cragin/DC Performance Inc]

Weld in a sensor ****. You need to put the wideband further upstream in the exhaust for a proper reading.

 

[BlueGTS]

I know that the A/F readings will lag a few 100 RPM's if I use the rear sensors but I would be ok with that. Just think about when Jason Heffner tunes his monster cars he uses a tail pipe sniffer. That is even farther down the exhaust and will produce even more lag but he makes it work.

In a previous car I have dynoed both ways. Dozens of times with a tail pipe sniffer and a few times with a **** I welded next to the front O2 sensor. I did notice the lag but adjusted for it when adding fuel.

From what I am reading, it sounds like my 96 will not care if the rear O2 is in or not. Is that correct?

 

[1TONY1]

From what I am reading, it sounds like my 96 will not care if the rear O2 is in or not. Is that correct?

I believe that is correct, but you need to leave the sensor plugged into the harness or get o2 sims.