Headers Installed! ... but I got a problem......

I don't know what it is... I installed my headers but as soon as they were installed, the 'service engine soon' light went on. I'm thinking its the oxygen sensor that connects but I'm very doubtful. It might not fix the problem and be a waste of money. Can anyone relate or have a suggestion? :banghead:

WHAT YEAR IS YOUR CAR?
what did you do to the o2s?

Its a 97 200sx i didnt do anything to the o2 sensor it was just put back into the header. It was the original one.

probably have exhaust leaks which in turn will make your o2s go lean which will cause a cel and a rich running condition, perhaps doubling up on the header gasket or o'ring

nevermind the light stopped Its all good now. This car sucks. I want a porsche.

nevermind the light stopped Its all good now. This car sucks. I want a porsche.
have you ever worked on a porsche?
try taking a 100,000 dollar loan just for the diagnostic equipment. :banghead: