would new ceramic headers mess up o2's???
 

i just ordered some pacesetter ceramic long tubes and ORY and i heard from some people that you must let the ceramic in the header break. if the o2's are in during the break in the o2 will be damaged from the harmful fumes. is this true?? so should i disconnect the front o2's and run open loop mode for a few heat cycles?? thanks guys

anybody???

I didn't, they work fine

Correct. The Ceramic will burn off some, that can cause the o2's to go bad. Chances arent high tho. But it could do it. As for running in open loop, not sure.But the car would run like shit, and itll take some time to burn off. Also since your doing an ORY you will need the rear o2's tuned out, that gives you an extra pair right there.

forgive me, but they are ceramic COATED? Doesnt that mean the outside of the header? If so, then your O2 sensors will be fine...

yea there the pacesetter, but i heard people with the same problem with this header. better to be safe then sorry u know!

i guess ill just connect them up, or leave them open for the first heat cycle

Yea Pacesetter calls it Armor*Coat, it's ceramic.

No, most quality headers are coated on the inside too.

Maybe, maybe not it's a mystery.

i will pplug the o2 holes up for the first heat cycle

mine are coated inside also....no problems.....2 years now,,,,,:nod

Even if the inside of the headers weren't coated and only the outside was, the 400+ degree temperatures they'd reach would initially burn the outside, too, just not as severely.

I wouldn't worry about the O2's. If you left the O2's out to break in the headers, the amount of gas mileage you'd lose at $4 a gallon would be able to buy you a new set of O2's :lol:

I got a spare set of o2s for cheap if you end up needing them.

i actually have gutted cats now so i tuned my rear o2's out a while back, i still have those sensors. il jus keep the o2's in there i guess, but thanks everybody. also is contact cleaner good to clean the o2 sensor with??

Hmmm, learned something, I always thought only the outsides were coated. Cool:chug: