Which plugs would you guys recommand on a Vortech S/C running 9lbs?? I'm running the Denso IK27 and it is time to replace them since it is getting old.

 

anyone?

 

Get NGK 7173(heat : 8).

 

The consensus on here seems to be either NGK 7173's (1 range colder then stock) or NGK 7405's (2 colder then stock) depending upon the amound of boost/power you are looking to run. I'm currently running the 7405's, but just know that you need to change them every few thousand miles.

 

define 'few thousand miles'

Im gonna get these for my 7psi pulley. still on stock now.

 

well seem like you are running quit a bit more boost then I do and only using 1 step colder and I guess that's what I need then thanks alot

 

Hey, since they are pretty cheap I just toss them every 3k in miles. They might last longer then that, but for the price I would rather toss 8 dollars in plugs then have to regap them since I pull them anyway. You can just change them out with every oil change.

 

every oil change...3k miles or less. The plugs are like 2.50$ a piece. I would recommend ordering atleast 8 because they are never in stock and if you have a problem its nice to have some backup plugs

 

7173's

 

I use 7405 with my set up..(NGK recommands 1 step colder on every 100hp increase)


but with 9 psi I would run 7173.


I change them every oil change(around 5000 mile)