
Originally Posted by
sleeper1500
It's a gimmick, they sponsor the shows.
I figured as much.

Originally Posted by
Bluethunder2k3
I have them in my truck. I noticed the truck idled and ran much better, especially in higher rpms, think my mileage went up .5 but thats it.
Was your truck due for replacements though? Replacing spark plugs will usually yield you better mileage and smoother idle regardless of the make.

Originally Posted by
sleeper1500
And yeah apparently we can get away with swearing now
Well that's a plus...I got a strict warning when I used the word a**...and I even censored it like that.
2000 GMC Sierra 5.3L 4x4 ECSB