I was just wondering, if you were to install the top of the line spark plugs for your car, do they actually improve performance?

Just sparkplugs, won't really make a difference.

stock ngk, platinum is a waste, iridium is a waste.

Originally posted by i like naked girls
stock ngk, platinum is a waste, iridium is a waste. What do you mean, I thought you got + 10hp for each spark plug you changed? hahaha :p

Originally posted by sparq
What do you mean, I thought you got + 10hp for each spark plug you changed? hahaha :p

SHHH, don't tell the new kid... geez

;)

So does it increase HP or not?

no just helps if you have worn out plugs. you're engine will run smoother if you are replacing beat plugs. if you have one chamber firing, and then replace them all so they all work, i would consider that a gain