when you buy a smaller pully you need to get a colder spark plug, but when you get stage 2 there are no plugs with the kit?

Would it still be a wise idea to get a step colder?

 

I have a feeling that it has to do with the half assedness of the piggy back kits.

 

I would like to know this too. Anyone know the reason? Don't the spark plugs give a better spark than the stock spark plugs??? Meaning the inside the cylinder will explode more.....I have no clue what I'm talking about lol someone save me.

 

How it works is.... with a smaller pulley you are pulling in more air. With bigger fuel injectors you're pumping more fuel. With more fuel and more air you need more fire. The fire comes from the plugs. Not to mention they are one step colder.

 

Honestly for $20 your car will run better and you decrease you risk of detenation. Why not with stage 2 of course.