buddy of mine has a 00 trans am ws6 with pacesetter headers and according to what he is thinking he should re-program his 02 sensors to either a higher or lower value for stoich reading.
So here is the story behind this: Stock exhaust manifold and stock placement of 02's. you then have pacesetter headers and y-pipe; the 02 sensor is lower and farther away from the stock position so the 02 sensor should be re-programmed to properly read stoich back to the car because it is going to see lower temperatures.
this all being said; I thought that the 02 sensors were self heated, they just took a while to warm up, and the reading, once warmed up wouldn't matter where it was...as long as it wasn't FAR away from the header due to innacuracy , such as readings from a wideband in the tailpipe.
is any of this right? because i don't think that you would need to recalibrate the 02s as long as they were in the header somewhere????