I have a 2001 a4 with the 2.8 and I am wondering what you guy's use and or have tried. Looking for the best plug for this engine. Thanks

 

This should help. http://www.boschsparkplugs.net/default.asp?i=1_7
These are the best plugs that bosch has to offer. They're not OEM, but bosch puts out an excellent product, and I would'nt doubt their superiority to OEM. HINT!--> do the wire set also, I didn't and got a BAD misfire. I've got a 1998 2.8 and used these plugs and they work great!