Ok im considering doing some upgrades to my current 05 gto a4, but i want to know some stuff that will not void my warranty?

All I currently know is that tires[drag radials perhaphs] will not void it.

Any suggestions would be greatly appreciated.

check with your dealer, it really depends on what they think. Usually exhaust mods don't void it.

I read that that for the most part bolt-on's were alright as long as they are not power-adders like a Magnacharger. I agree with Nocturn. Check with your dealer.

-K