Do not go with Remus. Remus is really expensive and it comes with a resonator. If you want a quiet exhuast then get Remus but what I did on my Golf was I did 2/1/4 piping from the Cat all the way back removed the stock resonator and got a 3 DTM style Magnaflow muffler. And if you live in the Tampa area then Id go to Danos Auto Air and Muffler on Dale Mabry they did mine and that guy is cool as hell. And my exhaust sounds nice and is loud as hell.
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2003 Volkswagen GTI 1.8T Silverstone Grey