Since the stock front o2 sensor is a wideband, in theory couldn't you wire an aftermarket AFR gauge into the front sensor by basically slicing it in? or would this result in false readings to both the gauge, AND the ecu?

I know with the PLX wideband kits that you can get for supras, they come so that you can replace the factory o2 sensors, and still hook it up so that it sends the ecu the signal, but also sends the signal to the gauge.

Just curious on if this was possible for the rx8 or if it was absolutly nessecary to buy an extra sensor, weld in a bung etc...

any info is appreciated! thanks

 

The signal from the front sensor is a muti channel thing. You need a standalone sensor.

 

figures =/ oh well, was worth a shot lol

with the Ap though, you can basically disable the rear o2 sensor though correct? so that it doesnt throw a code? and then you can use a wideband in that bung?

 

if you plan on keeping the cat... i wouldnt use the 2nd o2 as the wideband since the AFR's wont be accurate after the cat.

 

if you want to turn the cel off for the cat get another front sensor and place it on the where the cat sensor goes... it turn off mine

 

I'm running a catless MP, so i assume im going to be getting a CEL very soon, so the second o2 is useless to me reguardless lol.

But i plan on buying the AP as my next upgrade, and I might as well go that route if the second o2 throws the code anyway lol

 

so am i. i cut my original sensor trying to put a simulator and it didnt work, so i bought a used sensor replacement online but he send me the front one accidently. so i placed it in the meantime till i would recieved the correct one but it turn the cel off so i left it no cel ever since

 

so let me get this straight, since i have a midpipe,i can go ahead and remove that sensor and just replace it with my aem uego afr gauge because its not the stock cat? i have the accessport as well..sumwhere along the line i keep getting confused,yes u can do it, no u can't do it

https://www.rx8club.com/series-i-tech-garage-22/my-afr-readings-different-ap-vs-aem-165065/

see post #10,#13,and #14

 

You can completely remove the rear narrow-band O2 sensor if you have the AccessPORT.

 

ok..so thats what im doing then

 

I tied mine off, but wasn't sure if I could actually unplug it without the PCM freakin out

 

If you have a sensor present in the exhaust stream and its not receiving power to heat its element it can get fouled. If your not using the sensor its better to completely remove it and plug the hole.

 

I guess im the only one who got an additional bung welded into my RP SuperCat for my Wideband O2 sensor...