Just wanted to see what you guys thought would be a good spark plug for the s4. I was thinking Denso Irridiums but is it really gonna make a difference besides that fact that I wont have to tune it up as soon as if I were to go with cheaper plugs. Also, whats a good gap? Thanks

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I'd go oem bosch laser platinums. Everything you wanted to know about spark plugs
http://www.sparkplugs.com/
They have an NGK "oem equivilant"

 

Is that what you have on your s4? oem bosch laser platinums

Great site by the way, thanks.

 

I was able to order a set of the oem laser platinums from my local auto zone, it took them a week to get them, but the price was decent, only 5$ a plug vs the dearler 10$ a plug

 

Great, I'll try those, thanks.