I just ran through a tank of 93 octaine shell gas. I could not be happier with these plugs. At least 2mpg increase and power is large improvement, mind you I'm comparing to stock plugs. Now when I pass someone, truck quickly accelerates until I let off. If I let up and hold at 70mph then punch it again it will quickly take off again. 0 hesitation, 0 lag. use to truck would surge a little at full throttle higher speed. Ive only had it to about 95 mph. Hope to find an area I get achieve full speed of truck soon.

 

Sweet, I may have to get a set also.

 

DAMN...haha good deal! I guess when the time comes these plugs will be what I get

 

just put a set in today...WOW! i dont know if my old ones were that shot! they looked good and were in for around 20 thou, but these plugs are insane! im not blowin smoke either! the truck is like a whole new animal! couldnt be happier for 60 bucks....worth more than alot of my many mods for a fraction of the cost! A++++++++++

 

How many miles does everone have? Might have to go ahead and do it now!

 

sounds like a project in the near future indeed.

 

So those who have put these plugs in, did you have the Autolites or whatever is recommended for our trucks on countless forums?

 

yeah i put it iridiums in my truck too and awesome improvements . ngk is def a performance plug.