Po421?

[slantedpillow]

I just got a PO421 for the fourth time and finally, i am giving into the fact that i cant just keep resetting my cel. I need to do something about it. What have you all done to make this problem go away? I'm thinking of just going cat-less soon, so is there a way i can relay the catalytic O2 sensor to make it think its doing its job? or even just take it out? Any help is MUCH appreciated.

Thanks,
Dylan.

 

[CheeseHelmet]

Your pre-cat is dead

You can try the non-fouler trick to get rid of the CEL: http://www.mazdas247.com/forum/show...ure-Cel-Mil-from-removing-cat-with-Non-Fouler

 

[tweety2300]

+1 non fouler trick works on my bad pre cat spend the 100 bucks and get an obx header knock off off of ebay it will delete the pre cat and give you more power