1sy off I will say the drivers side was cake...NOW the passenger side was HELL...lol especially the rear plug...I didn't notice the gap was around .032 so I closed then up to ,028 and I also noticed I had one plug a little darker and I think it was wet..will that cause a bog when cold and a possible backfire ?....I think these plugs where worn they been in the car 3 years with boost and meth going thru it...OH yeah I also changed the ACT sensor boy that was full of dirt and oil type substance ....I took it for a ride it seemed way better but still had a surge and a little rough idle...I think I have an intake manifold leak wonder if that would cause any of these issues?