What is the proper gap for my plugs to be on my supercharged 2008 Mustang GT? I bought Brisk Racing plugs but I do not know what the gap should be.

 

How much boost?

 

It has between 10 & 11LBS of boost

 

How many miles do you have on that car with that HP rating with the stock internals?
I also have stock internals with 490RWHP. I hope mine will last just a little bit longer.

 

I would gap them .032 - .036. I have had the power for about 18 months. My car isnt a daily driver and sees about 5000 miles a year at best. I have a friend who has about 500 to the wheels on his Whipple supercharged 2006 GT with a stock bottom end and hes had it about a year with no problems yet. Its all in the quality of the tune and how hard it gets driven.

 

I drive mine just about every day and I run it about everyday, so I am saving for a MMR longblock at the moment. I gotta work on the suspension after that

 

490 RWHP on a stock 08 will not last you that long....I would keep it under 450 at the max.

 

Too late for that. I want 800HP. I will be working toward that soon!

 

You can't gap them unless you have a special tool for the 3v cars.