doc_is200

Hi all So my is200 which is tte supercharged running 1zz injectorsand a rankone FCD. When going to change the spark plugs i noticed spark plugs 4, 5, 6, were much much darker than 1, 2, 3, seems strange what are the possibilties to this and solution could it be a bad fuel rail ? Or do i need a greater fuel pump? Any help greatly appriciated

Gentlemen want to figure out what to do with the breather valve on the top of the rocker cover as it no longer goes to the stock air box as the car is supercharged and really don't want to leave it open any suggestions 🤝

Same query here !