MadMoose

So I just emailed Lethal Performance asking if the whipple kits for the 08-09 mustang come with the updated spark plugs and they responded saying they don't come with spark plugs at all. The reason being that the new design is one heat range colder from the factory and works fine with forced induction.

I just wanted to get some more feedback on this since I hadn't heard of it before, do I really not need new spark plugs with a supercharger with the new spark plug design lol? I'd assume I would still need to re-gap them though at the least.

danzcool

The whipple '08 kit I received in March came with spark plugs, also ordered through Lethal.