horrible gas milage

Back when I had my 2.7L (and was a young snot-nosed kid) I installed factory Toyota plugs and didn't gap them because the knuckle-head at the counter said "don't gap them, they come pre-gapped."

My truck kicked, sputtered, and farted when I started it.

I pulled a plug back out and checked the gap, I don't remember specifics now, but it was about 50% off. I gapped it, reinstalled it and did the others. It ran fine.

Since then, I have never trusted "pre-gapped" plugs.

 

I am with this poster^^^ I never trust pre gaped. Thats like a used car salesman saying trust me!

 

Mine is a V6 auto with a TRD supercharger, MPG was better even with th SC.

Was on Taco when I purchased