Long tube headers=check engine light?
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Staging Lane
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Long tube headers=check engine light?
I have a 2008 gmc sierra 1500 6.0L that I just put long tube headers on. when i put them on i didnt plug any sensors back in the exhaust since i needed to take it to a muffler shop to connect to the rest of the exhaust. obviously driving just headers and no sensors threw a check engine code then once i got the entire system routed up again ( no catalytic converters but installed all 4 sensors in correct order) the truck started up with the check engine light on, so i took a battery terminal off and put it back on and the light turned off. Ive driven it about 150miles and just today the light when back on does anyone have an idea as to why? maybe the second set of sensors are programmed to test the exhaust after its been filtered, and now that i dont have cats its throwing a code?
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A real tune will allow you to get the rear 02 sensors "tuned" out. Which will get rid of the check engine light.
PLUS the tune will allow for more hp because handhelds are pieces of ****.
PLUS the tune will allow for more hp because handhelds are pieces of ****.