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innovate bung extender eliminate e8 error?

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enriquez2000

Proven Member
2,269
810
Oct 5, 2014
fort collins, Colorado
I am on my 3rd 02 sensor(luckily the 1yr warranty is unlimited so far). I found this bung extender offered by innovate to supposedly help eliminate the issue. My 02 will work flawlessly for a few days than start getting e8 errors randomly. Has anyone tried this thing out?

http://www.innovatemotorsports.com/xcart/product.php?productid=16148
 

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It can help, but where is your sensor located? Is it at least 2 ft. from the turbo as recommended in the manual? Also, did you fabricate a heatshield, like out of copper sheet? For me all these things ultimately helped me keep my sensor reliable and living longer (and with my car racing I tend to keep it heated at higher temps for longer than you're likely if yours is a street car).
 
It can help, but where is your sensor located? Is it at least 2 ft. from the turbo as recommended in the manual? Also, did you fabricate a heatshield, like out of copper sheet? For me all these things ultimately helped me keep my sensor reliable and living longer (and with my car racing I tend to keep it heated at higher temps for longer than you're likely if yours is a street car).

It is factory o2 spot which many have been ok using... There is no room for a heat sink.. trust me I have one fabbed and no way its going in the factory location.

I may just have to buy a down pipe and weld the bung in. Was hoping to just work with what I have for now. E85 has seemed to really make the sensor act up faster.
 
What factory o2 location are you referring to?
O2 housing or the down stream location?
What type/brand/part# o2 sensor are you using?
An o2 sensor extender should not be required to prevent an o2 sensor from failing. That sounds more like a band-aid fix.
I am currently using a wideband sensor in the original o2 location using an evoIII o2 housing. I have been running this setup for just over a year with no issues. This car has also run multiple track days, auto-crosses, and rally cross events where sustained high temps are common.
 
What factory o2 location are you referring to?
O2 housing or the down stream location?
What type/brand/part# o2 sensor are you using?
An o2 sensor extender should not be required to prevent an o2 sensor from failing. That sounds more like a band-aid fix.

I am on a 1g so the O2 housing is the only factory location. The O2 sensor is the bosch 4.2 that innovate has. You can get them at Oreilly. its an audi/volkswagen part #. Maybe the denso version is better? Its double the price so Ive been sticking to these that have warranty, but after a while they are going to get tired of replacing them for free. Once replaced it works fine for a few days and then starts giving me the E8 code on the wideband... Its a common problem from what I have googled and this bung extender came up.
 
That should not be a common problem. You likely are running too rich, or have an exhaust leak near the o2 housing. The extender would not help with accurate readings or response time as it is being moved away from the exhaust stream. The extender is more commonly using for rear o2 sensors to eliminate the CEL for those not running a catalytic converter. Moving the o2 sensor down stream will not help if you are indeed running rich or have exhaust leaks.
 
That should not be a common problem. You likely are running too rich, or have an exhaust leak near the o2 housing. The extender would not help with accurate readings or response time as it is being moved away from the exhaust stream. The extender is more commonly using for rear o2 sensors to eliminate the CEL for those not running a catalytic converter. Moving the o2 sensor down stream will not help if you are indeed running rich or have exhaust leaks.

wide band is always 14.7 unless heavy throttle and then only goes as low as 12..

Curious how an exhaust leak would cause this E8 error
 
An exhaust leak can cause erratic readings. Leaks can cause false lean readings, compensated by adding more fuel (running rich).

If you are having a tight fit in the stock location, have a bung welded on a little further down where you will have room for the heat sink. Is your calibration set? Is your firmware up to date or recently changed?
 
An exhaust leak can cause erratic readings. Leaks can cause false lean readings, compensated by adding more fuel (running rich).

If you are having a tight fit in the stock location, have a bung welded on a little further down where you will have room for the heat sink. Is your calibration set? Is your firmware up to date or recently changed?
The mtx-l has never had a firmware upgrade. Ill have to check for exhaust leaks.. Didnt have any that I knew about and never had the issue until swapping to e85 but maybe I sprung one. If I get a downpipe Ill put a bung in it so I can get further down away from turbo and a heatsink will be no problem there.

This is a PITA issue to have happen with just an e85 swap. Thought I had it squared away until this sensor started in too.
 
Did you move your bung? Mine is higher up than what yours looks like
No, 2G stock O2 housing, 2G stock front O2 location.

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No, 2G stock O2 housing, 2G stock front O2 location.

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Yours looks like its down by the downpipe flange. Mine is where the gate pipe runs side by side and cant squeeze a sink in there
 
I installed a stock 2g O2 housing on my 1G in preparation for moving to a WB O2. Just be aware that the stock 1G heat shield requires to be modified in order to fit the 2g O2 housing, or you could source a stock 2G heat shield, they bolt on just the same but the 2G one has an additional opening where the 2G O2 sensor is located (in addition to the 1G stock location which is also the EVO III stock O2 location incidentally).
 
If I were you I would just go for the new down pipe and get a bung welded on right before the flex. There's no guarantee a 2g o2 housing will resolve your issue. Plus you need one down the road. Look in the classifieds, you might find exactly what you need for dirt cheap bung welded on and everything.
 
If I were you I would just go for the new down pipe and get a bung welded on right before the flex. There's no guarantee a 2g o2 housing will resolve your issue. Plus you need one down the road. Look in the classifieds, you might find exactly what you need for dirt cheap bung welded on and everything.
Ive been looking for months LOL
 
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