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H3 CEL after installing Orion headers.

M

mrchew

Member
Messages
19
Location
hutto, tx
Trying to see what options I have to get rid of CEL. Does anyone know if someone makes catalytic for H3 that installs after the header? I need to get rid of light to pass inspection. Should I just go to muffler shop to get custom made? Anyone had any luck with those check engine light eliminator? Please help.

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SuperBuickGuy

SuperBuickGuy

Well-Known Member
Messages
3,403
Location
Woodinville, WA
you'll have to fab your own set up then re-insert the after-cat O2 sensor. HP Tuners gives you the option to turn that sensor off - but if the smog folks check your OBDII, it will say that it's turned off and usually that's a no-pass as well.
 
lowtrac

lowtrac

Well-Known Member
Messages
222
Location
Georgia
Did you delete a cat? I had an issue with a Camaro once when I put headers and a high-flow dual cat Y pipe and the factory O2s freaked out. I ended up putting O2 sims in to make the light go out even though all the emissions stuff was still intact.
 
SuperBuickGuy

SuperBuickGuy

Well-Known Member
Messages
3,403
Location
Woodinville, WA
I deleted the 2nd cat - I did have issues with the O2 sensors, but it was coincidental (they kept throwing a heater-code... which is interesting only because they don't have heaters. A brief discussion with HP tuner software sorted that problem)....

With that said, my H3 is possessed - I replaced the cats then the starter started screwing up...
 
B

Bruces

Well-Known Member
Messages
215
Location
Portland, TN
Sounds like my luck. Installed snorkel Saturday and noticed mys CSF radiator was leaking pulled it Sunday and put my plastic radiator back in. Pulled tranny dipstick to refil / check tranny fluid and notice that the bracket for dipstick that bolts to secondary air had broken loose. Now I’m afraid to touch it as it seems to be falling apart right in front of me.
 
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