Running very rich all the time!! HELP

[Smokin80]

So i ran at the track all day and on the last run i pull to the line and it starts missing and idling super rich to the point that the plugs are BLACK and it wont even idle without giving it gas. Sometimes it will run fine at 2000rpm but it will be at 11:1 afr's. The 02 wont cycle either but instead just maxes out at 1 volt.

The fuel pressure is at 43psi. I also tried 2 different 2G maf sensors. plugs are new...again....wires are 1 hour old.

GRRR so annoyed. Damn DSM's

I attached an idle log for those of you that have dsmlink. The very end of the log is where we tried to just let it idle on it own and it just dies. A lot of the log we had to keep revving it up to keep it running. Mods are in my profile.

 

[Smokin80]

oh my.....its been a long day.

it turned out to be a split intercooler coupler. had to take of the bumper to see it on the short route pipes.

thanks for looking now back to tuning...need to run better than a 7.8 in the 1/8 tomorrow

 

[tbonitz301]

I would replace the front o2 since you said it isnt cycling like it should. I had a similiar problem not to long ago