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Got the speed engineering 1⅞ LT headers and x pipe installed 3-4 weeks ago. Have a remote tune from Paragon using the RTD and sent them data logs and im now on my 4th revision. Car drives great and everything feels great but after a few days the CEL comes back on.
Since the speed engineering headers and x pipe only utilize 3 of the 4 sensors, I disconnected the drivers side rear one and have it set it as it looks directly from speed engineerings website. They have the 2 fronts in the headers and only have the pass side downstream plugged into the x pipe.
Are these codes something i need to have the tuner look at more or are they just the o2 sensors reacting to the long tubes and no cats?
First imagine is from speed engineering website.. 2nd is of my current setup and 3rd is of the current codes.
It makes sense that there would be DTC's. I am not sure how you solve it. My car had an O2 sensor wire melted to the exhaust pipe. I had the same errors only a different sensor. I think the car uses default tables when the sensor is damaged or not connected. Not sure what effect that has on a tune, or how to solve it.
You either need to tune that B1S2 sensor out or get some kind of O2 simulator. Either way you are technically not street legal, not trying to be "that guy" but it says right on their website that they are not intended for street use. I'm not sure how you can expect to run catless and not get a CEL.
If you remove a sensor, you need to tune it out. Anytime you mess with the emission control system you will get the MIL. That's by law. Technically tampering with emissions is against the law as well. But you do you. Not sure why they don't just mount both sensors to the X-pipe next to each other if they are already modifying the tune to take into account no cats.
I think that third sensor port is for a wideband. I can't think of any reason they would have a third but not 4th bung for an O2 sensor unless the third is for a wideband for tuning. I'm surprised you aren't also getting a code on B2S2
Few o2 codes im chasing
