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I think the main problem is that having an O2 sensor in a single primary is super-sketchy. While it may work for many people, it CAN cause issues because it is not exactly IDEAL. We went from 4 exhaust pulses to 1 exhaust pulse.
I have literally done over 1000 tunes with this or a similar set up and have never had an issue because of the O2 sensor being in the upper bung.
I have NEVER had a truck with a CEL that was resolved by moving the O2 sensor from the upper to the lower bung.
If there was an issue with those sensors, wouldn't the tuner see it? Especially if it only affected one bank.
|The Following User Says Thank You to TurboDA6 For This Useful Post:||
the first set of jba long tubes i bought, i sent back. horrible quality. they couldn't even debur the material that was dangling where the o2 sensor was drilled. I made a several minute video pointing out all sorts of cheap labor quality issues, but never posted figuring nobody would really care and there are already videos on youtube about jba quality on other vehicle headers. I did end up with the jba's in the end and found the collector flange on one of the headers is installed slightly off square and slightly rotated, and have always battle leaks unless i fabricated my own b pipes...no premade product would fit without leaking (3 different manufacturers). I feel your pain, and looking to replace the rusting stainless headers in the near future.
Glad you got your issue sorted out tho, seymore4 and jeff have always been very helpful in troubleshooting, not insinuating that you dont know what youre doing, they do want to help when they can...great resources on here still
The guys I have been dealing with have been great, their hands are tied because JBA is it's own thing. I sent JBA a scathing email over the weekend, and they haven't bothered to reply.
Looking at the workmanship on the JBA headers, and a few other parts issues I had, I am suspicious that the parts on my truck are not of good enough quality to warrant extensive troubleshooting. I went from badly cracked OEM manifolds with no codes, to what should have been a straight-forward install that ended up throwing a code, even though everything seems solid.
I'm lucky, the code isn't persistent and my State is doing away with emissions testing in 2020.
Here's pics that seem to be similar to your experience:
I just don't have faith that the headers are sealing up 100% correctly with the way the ports look..... but I am not going to tear into my truck again to resolve this.
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