= s More HP!!! great plugs. Only took me 2 hours to change plugs too. lol A not bad for a novice. A lil tight in there. ha

 

I have run the #4418 Plus 4's for years with great results, mainly in more low end torque.

 

Did you dyno it? How much horsepower gained?

 

I didn't when I installed my plugs, but there was a significant increase in the low end and I was replacing a set of 22,000 mile old factory Champions at the time.

 

No I didn't put it on a dyno scanner. But the old plugs which were still in decent shape were those NGK Iridium plugs. They cost about 7 bucks more per plug and Like Mike said definetly more low end torque, more get up and go. Great plugs!!!! I'm sold! My friend in the passemger seat could even tell before I said anything myself...

 

I had the NGK Iridium plugs in mine for about 10k and had to replace them. I went with a NGK plat plug. The Iridium plugs definitely preformed great at first but after I sea fomed a few times I had to replace them. Does the sea foam react with the Iridium because all 8 plugs were very discolored

 

That would be the seat-of-the-pants dyno.