fordsvtmfl Posted June 6, 2008 Share Posted June 6, 2008 Hi everyone, I have been looking into getting the megan racing downpipe for my 98 gs300. The only thing that concerns me is that some ppl say that removing the cats will mess everything up, b/c the 02 sensor will give the wrong information. Does anyone know what will really happen? Thanks Quote Link to comment Share on other sites More sharing options...
djspawn00 Posted June 8, 2008 Share Posted June 8, 2008 If the cats are removed the 02 sensors will detect a malfunctioning cat and give you a check engine light. You can remedy this by replacing the sensors with sensor simulators. Quote Link to comment Share on other sites More sharing options...
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