ive been getting carbon out of my exhaust but only when i drive the car hard its fine when idleing. ive replaced the injectors and plugs. also tried adjusting the tps got it as close as i can get. i even compression tested the engine which came out to 155psi on all 6 cylinders. i know on a maf system if you have a boost leak it will cause you to run rich but im not realy sure how this map system works. so if anyone haves any ideas i would appreciate it.