Catalytic Converter
#1
Catalytic Converter
I have a 98 Chev K1500 with a 350 vortec. It has 209,000 miles on the same engine. When i first got it, the truck had 190,000. I was getting around 15-17 mpg. It threw a P0420 and P0430 about 3 months ago and now I am getting 9 mpg. I am thinking the cats need to be either replaced or cut off. I have 2 Flowmaster mufflers on there now and would those alone be enough back pressure for that front O2 sensor to get a reading? My friend did it to his vortec but idk if I should. Any Opinions on the idea? I kinda need help.
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hines182
Silverado, Sierra & Fullsize Pick-ups
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July 28th, 2007 6:47 PM