I have a 99 a4 2.8 quattro, stock, but im planning on doing an intake and chip soon. I'm planning on getting some Denso Iridium plugs (<<Should I get something else??I want the absolute best in performance). Anyway, my question is, what should I gap them at? And is changing the plugs an easy DIY or is it a PITA?

thanks

 

its an ez job and you should get nology plugs with nology wires

 

negative.

nology is garbage. They're expensive as polished gold **** and they'll hurt performance.

Denso's with the stock wires are perfectly fine.

Can't help on the gapping situation.

 

You aren't going to find any plug that gives you the "best performance". Even the cheapest ones spark

Unless the plug is fouled or gapped incorrectly, or worn, you wont notice any difference with new plugs.

The only major difference between iridium, platinum plugs are that they are harder metals and will last longer than "ordinary" plugs. Other than that they don't improve performance.

 

well whatever, can someone just tell me what to gap them at for the 2.8??/ (NOT 1.8t)

 

I dont know what the gap should be but I will tell you one thing... MAKE SURE YOU PROPERLY TORQUE THEM DOWN WHEN YOU INSTALL THEM haha... i had a small problem with mine shooting out of my motor a few weeks ago b/c of that...

 

lol [sm=goodidea.gif]

 

hah yeah we saw the pics.. sad sad story. torque em!

 

what exactly do you mean by torquing them, tighten them really hard? How do i know how hard to tighten them?

 

No you don't put them on tight, you tighten them to the correct torque.

If you are going to work on the car, invest 15 dollars in a Haynes manual for the Audi from PEPboys or other autoparts store. It contains DIY information.

The plugs should be at 22 foot-poungs.

According to my book the gap for the DOHC engine is 0.063 inches. Double check the old plugs to see that the gap is atleast close