So I've looked and looked and it seems like the stock O2 sensor is wideband, correct me if I'm wrong. I have the cobb accessport and that can be used to look at the AFR and it seems pretty accurate. So the question is, would I need to buy a wideband AFR gauge or could the accessport be enough? If I had a fully electric AFR Gauge you know that plugged into the rx8's own computer would it be reading as a wideband or since it is a narrowband gauge it would be reading that?

One more thing, I have heard that you can run a turbo with the rx8 stock fuel injectors no problem and have heard of people doing this. I have the Greddy t618z turbo kit on my 2004 MT, even though cobb AP says its a 2005 hmm.... Could I run stock injectors?

 

I would recommend you have a seperate AFR guage , just because it is such an important thing to regularly monitor . Use the AP guage for something else . Also the factory wideband bottoms out at 11.15 and in a turbo application you often see numbers well below that.


yes - no problem . You only need larger when you upgrade the turbo and push over 300whp.

 

Awesome, but I can't use the gauge that is made for reading narrowband to read the wideband sensor on the rx8?

 

no.

 

the AP's equiv ratio works well enough as a temporary solution. A forum member is selling a box that'll report the ECU's wideband on the stock LCD. It's got a boost sensor on it too.