Hey guys, what's going on.... long time reader, only second time poster... I'm having issues with my SC400. It's a 92. Modded quite well. I have an Injen cold air intake. I replaced the actual filter the other day, and now it's idling rough. It accelerates better than ever. I also replaced ALL of the tuning issues. Brand new spark plugs, ignition coils, distributor caps and rotors on both sides. No check engine lights, and I even went out and bought another MAF with the housing. Still nothing's changed. Any help guys would be greatly appreciated!!