Question about 2006 Toyota MR2 Spyder
You can cheat and add 3oz of acetone per 10gal of fuel... This will often get readings down. BUT you should attempt to find the actual cause of this as soon as possible, to eliminate any future problems.
Did anyone suggest a cause?
Posted on Jan 08, 2009
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Please note that while a failed catalytic converter will contribute to high NOx readings, the failure in itself may have been caused by some other upstream performance problem. In all cases, it is crucial to identify the root cause of the problem before blaming the converter.
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