Originally Posted by TheUltimateBohab

I put these plugs in my Runner and they absolutely Rock the starter doesn't even barely turn before it's running

2008 TOYOTA 4RUNNER 4.0L V6 Spark Plug | RockAuto

The very bottom ones the NGK ruthenium or whatever also run premium will help with your throttle response problem when I first bought it I had a very small Miss at highway speeds I put in a thing of Chevron Techron with a premium tank and it stopped the Miss dead I also changed out my spark plugs with the ones I posted and it made a lot of difference the dealership I bought it from had put two different kinds of plugs in both copper and those bastards were so worn out at 116000 miles that I don't know how it ran at all like jokishly terrible I figured they had to have been used when they put them in.....

But yeah if you haven't already bought your plugs and put them in try those bottom ones I think it's worth the extra few dollars