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Will removing your catalytic converter harm your Chevy silverado?
Wiki User
∙ 14y ago
it will cause the truck to go into limp mode, no power, and a big drop in mpg. the rear 02 sensor will not read and the ecu will retard timing. hint limp mode. there is a way around this you can buy a rear 02 bypass, hard to find them due to they were outlawed a few years back. you can make one for a few bucks with a resistor, or a dyno tune to get the ecu to not look for a reading from rear 02. if this is done right, i have seen 35 to 40 hp gain, but 10 to 12fpt loss. helps in the mid to top range but hurts you off the line.
Wiki User
∙ 14y ago
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