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As you can see by the photos I uploaded, my car did not pass the NOx(ppm) part of the state inspection. We used a fuel cleaner as suggested by the inspection tech. We put the cleaner in the tank and ran it and all the gas out... then put more gas in and ran it all out and then put more gas in and went back for the re-inspection but there was almost no change at all on those NOx numbers. My car has top fit win factory 752 fuel injectors, 2.5 exhaust system with stock cat converters and wideband O2 sensor reading at 14. Does anyone have any advise? Thank you #1
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