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just wondering if i should replace my cats or go for straight pipes any info dealing with this code 2007 eclipse 2.4 litre stock automatic transmission 198,000 kilometres
 

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Gonna need a tune to run catless headers, you can gut the stock headers also, not as good as a real header like RRE’s but better than clogged Cat stock one

O2 spacers (Spark plug defaulters, one drilled out and doubled up) on the bottom O2 sensors can work, but not ideal and temperamental

ECU tune is the way to go
 
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