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Cerberus66 08-13-2019 12:04 PM

O2 Sensor question
 
Are any of you that run Holley HP EFI having a hard time with O2 sensor longevity? I was wondering if the moisture from Headers is killing my sensor.

Baja Rooster 08-13-2019 12:17 PM

This guy has worked wonders for me.

EVIL ENERGY O2 Oxygen Sensor Bung M18x1.5 Copper https://www.amazon.com/dp/B07G81XZZT/ref=cm_sw_r_cp_api_i_yjUuDbNF6YSVJ

Cerberus66 08-13-2019 03:42 PM


Originally Posted by Baja Rooster (Post 4701846)
This guy has worked wonders for me.

EVIL ENERGY O2 Oxygen Sensor Bung M18x1.5 Copper https://www.amazon.com/dp/B07G81XZZT/ref=cm_sw_r_cp_api_i_yjUuDbNF6YSVJ

so you had this issue then? can you elaborate a little more on the issues you had?

LS1 08-13-2019 04:36 PM

There will always be moisture in a marine exhaust, the moisture/condensation will ultimately render the o2 sensor useless over time and you will have to replace them once in a while. Keep a spare with you. Or use an o2 bung as recommended by Baja above that will make it harder for the moisture to reach the o2 sensor.

Rookie 08-13-2019 08:46 PM

Are you running the NTK sensors? I was told that they work better in the marine environment.
These help also.
https://www.ebay.com/itm/INNOVATE-MO...gAAOSwhglTx8Y0

Cerberus66 08-13-2019 10:09 PM

No Iím not yet. Iím replacing with Bosch and will get a bing extension and see how that does first. I was told same thing by my tuner. They are 100 more per unit and last a little longer.

Trash 08-13-2019 11:47 PM


Originally Posted by Rookie (Post 4701908)
Are you running the NTK sensors? I was told that they work better in the marine environment.
These help also.
https://www.ebay.com/itm/INNOVATE-MO...gAAOSwhglTx8Y0

This is the piece I would recommend too. Made no difference in AFR readings either. I did back to back comparison.

Baja Rooster 08-14-2019 11:26 AM

I never had any issues to begin with, but have always ran the Innovative bung extender from day one on my wideband.

When i put fuel injection on I got the 90į one that I listed as itís pretty much the same but the bend allowed me to clock it so the sensor is way up away from the water. 50 or so hours so far and no issues.

Trash 08-14-2019 01:13 PM


Originally Posted by Baja Rooster (Post 4701981)
I never had any issues to begin with, but have always ran the Innovative bung extender from day one on my wideband.

When i put fuel injection on I got the 90į one that I listed as itís pretty much the same but the bend allowed me to clock it so the sensor is way up away from the water. 50 or so hours so far and no issues.

Just for more data I run that extender as well and have about 250 hrs of run time on the same O2 sensor.

Cerberus66 08-14-2019 02:28 PM

thanks guys, Ill be doing the same now. new O2 is on a slow truck from holley to me.............


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