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i heard a 2011 mazda speed 3 with probably a cobb exhaust on it. i have an 08 audi a4 quattro auto that i want it to sound that way. It was deep and loud. What exhausts do you guys recommend for the car? i dont want it to sound like the mazda but i want it to sound like it actually has something in the engine. so therefore i want it to have a deeper sound.

the cheapest way is to replace existing resonators/mufflers with at least two or three straight thru glasspacks

there are many different exhaust systems that can be purchased and actually heard on you tube.
My suggestion would be to install the test pipe and have no resonators just a borla muffler, i did this set up on My 08 GTI that has the same motor as the A4 and it sounded wicked!!

Loushus86
www.germancardepot.com