At around 2500-4500 there is a slight ticking noise but only when i am nearly full throttle. Does anyone know what this could possibly be? It happens less after the car has warmed up. It's mostly noticable in 1st and 2nd gear.

edit: forgot to mention 1996 A4 V6 12v

 

Only under load? Will it do it in the drive way if you just free rev it?

 

Nope, sounds fine when i just free rev it.

 

That's odd........

exhaust leak is the only thing I can think of....