I have a 03 cobra with 56k on it a couple of weeks ago my exhaust started making a noise sounded like there was something vibrating around in my pipes i pulled the x pipe off and checked the cats and to my surpise the honeycomb in one was busted up the other looked like it was starting to break down as well, im only running 15psi with a whipple so i gutted both cats put the exhaust back together and the car ran fine tile today i got a trouble code sayin im running lean im thanking its because the cats are gutted but im not sure the back two 02 sensor are brand new also does anyone have any ideas
PO171 trouble code
jrg5411
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I have a 03 cobra with 56k on it a couple of weeks ago my exhaust started making a noise sounded like there was something vibrating around in my pipes i pulled the x pipe off and checked the cats and to my surpise the honeycomb in one was busted up the other looked like it was starting to break down as well, im only running 15psi with a whipple so i gutted both cats put the exhaust back together and the car ran fine tile today i got a trouble code sayin im running lean im thanking its because the cats are gutted but im not sure the back two 02 sensor are brand new also does anyone have any ideas
if it says it's lean then it's from the front sensors like 86er said, so there's prolly another issue for it. can you monitor live data? I'd take a look at the o2's and make sure they're switching properly. also look at the fuel trims and see what they're at.
could be anything from an exhaust leak before the sensor, a vacuum leak, sticky injector, etc.
could be anything from an exhaust leak before the sensor, a vacuum leak, sticky injector, etc.
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