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Realized I never did a proper intro for myself ... really enjoying the wealth of knowledge and passion here and hope I'll be able to give back some over time. Enjoying life here in the Shenandoah Valley of Virginia. Grew up with my dad driving a '75 J-10 then later a mid to late 80's J-10. Work...

Need a bit of advice ... have check engine code P0420 - Catalyst Efficiency (bank 1). 2008 JKUR and currently at 82,000 miles so just out of warranty. I've had this code for about 8 months and don't notice any performance issues. Should I just ignore it? If in fact I need to replace the cat...