I have a problem with a mixture of fuel!

I have PaceSetter Headers.
I changed the MAP sensor 1bar (it did not help)

No check engine
My spark plug black
I read ( https://www.thirdgen.org/forums/v6/5...ost-power.html ) what may be a problem in the O2 sensor without heating!



I'm illiterate in english sorry!
http://vimeo.com/37272507

Probably running rich, some people seem to be fine without a heated o2 sensors when running headers, others seem to have issues. I would verify your o2 readings and AFR if possible and go from there, or you can try throwing a heated o2 at it, if it ran fine before that will probably sort it out.

I do not have the program read ECM my 3.1