O2 sensor swapped and still odd readings

[Matto]

Hey guys, I changed my O2 sensor 2 times and my ATR fuel air ratio and auto meter air fuel ratio are not reading correctly, it acts like it is way too lean on the reading, but it is fine on the knock gauge and fuel pressure, the only thing I can think of is that I have a 93 octane KB chip for 36lb injectors and I only have stock ones.

Any info would be great.

Thanks

Matt Wenning

 

[burnout]

If you have any exhaust leaks around the sensor you will get a lean reading. You might want to get a chip burnt for stock injectors or buy some 36lb. I have a chip form modern muscle car for 84/85 ecm/stock injectors that I will get rid of cheap.

Burnout

 

[Matto]

I have an 87 ECM conversion, but thanks anyway.