rumbling muffler

[a4brooks]

hey guys, i drive a 99 a4 1.8t quattro. Last month i had to repair an ignition coil and now my muffler is rumbling and i dont feel like paying for another repair soon. Any ideas on what it could be? it only happens when im in drive, neutral, or revers, never in park, and its only when im at a stop and not driving. It doesnt happen all the time, just occasionaly so im just assuming theres something losse there. Btw anyone know of any nice aftermarket exhaust systems that would sound nice for my car. Really looking into makin this car nice. thanks guys

[i_subly]

i hav heard alot about the, milltek system n hav heard em on a rs4 and s6...n believe me...they both sounded bang on...
as for me...i have got a price for a cat bak around the 550 mark 4 my b5...so its time to get gatherin the pennys...lol
why not go onto you tube...n serach for " audi a4 exhaust" u should get a gd list of diff exhaust n all sound gd....ur choice m8..
do let us no which 1 u go for...