ok im running the greddy kit at stock boost with a bov, intercooler, and the blue box. everything else on the car is stock. so i pulled my plugs after running the car for about 150 miles and the tips are grayish, doesnt this mean lean??? i heavent heard detonation and my a/f guage (im know its not accurate but it gives me an idea) is always at super rich at wot. what could be the problem??

 

help a brother out!

 

The whiter the plug the leaner, tan is around 14:7:1 AFR, and black sooty plugs are too rich. With out a wideband AF ratio that is as good as it gets.