Replaced Upstream O2 Sensors Yesterday

[lawdude]

Many of you who posted to my "Lean Condition" thread suggested new O2 sensors. I had them and a new fuel filter install yesterday. Went to Pony Wars with C16 tune. Noticed that car wanted to hesitate.

To shorten this up, I now have two new codes on the C16 tune- P0172 and P0175 - system too rich both banks.

I uploaded the 93 octane tune and went for a 3 mile test drive. So far no hesitation and no codes. I'll drive it some more this evening to make sure.

Suggestions? Maybe retune?

Oh, shoutout to MobyDick who I saw at Pony Wars today.

 

[lawdude]

Took her out for a test ride for several miles on the 93 octane tune. So far no codes. I'll get in touch with the tuner to see what he thinks.

 

[Kenneth]

Would it be possible you need to put a few miles on it for the ECM to re-learn?

 

[spitin venom]

I had lean codes in my '04 Cobra and it ended up being a $1.oo rubber hose. Check for unmetered air. Hopefully the o2 sensors fix it. Running race gas kills the life of plugs and o2 sensors.

 

[Van@RevanRacing]

Unmetered air is a possibility as well. What plugs and do you know what they gapped the plugs at?

 

[lawdude]

Hello Van. BR7EF gapped at .028

 

[Van@RevanRacing]

Hello Van. BR7EF gapped at .028

Ok.

 

[Van@RevanRacing]

Did you get my reply email?

 

[lawdude]

Nosir

 

[Van@RevanRacing]

Are you running after market rails was the reply

 

[lawdude]

Van:
I resloved that issue. Thanks.