Quote:
Originally Posted by ShibaYuki
I'm going to conclude the problem is with a damage O2 sensor. Since all signs points to it. I'm gonna replace the O2 sensors and get new gaskets today. And get it reinstalled by another shop. Is there any shop I can go to that are reputable? I would've thought nextmod would be able to do it properly knowing their name. Not to put them down, they're a great shop and know their stuff but just made a mistake on mine.
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as the other guys said dont buy parts on spec, take it back to shop that did the job, o2 sensors not cheap and it might be just a leak or bad connection ect.
double check the shop did not install o2 spacers, a guy here in OZ got headers installed and the wombats at the shop installed an o2 spacer on the front primary o2 sensor.
you don't need o2 spacer or de-fouler at either of the sensors as your tuned
if you can with your oft log AFR (front 02 sensor), Commanded AFR (what ecu is asking for) and Wideband AFR (rear 02 sensor) also log rpm,ltft,engine load. do a couple of steady say 20% throttle runs up to say 4000rpm and post up logs
those guys at shop should have used NEW gaskets and cleaned up the threads on the header for o2 fittings, they definitely should not have forced 02 sensors into bungs on header.
If they used old gaskets it will leak for sure and if the 02 sensor not screwed in all the way then it wont be in exhaust flow and it will leak causing all sorts of issues.