If sound is not a concern, about the best deal is a BDJ's dump TBE for $350, while the side exit is just a bit more and much more liveable (I should know, I have one). If you're thinking of just getting a 3" catback now and a DP and 02 housing later, reverse that. While S2 was designed for just a catback, the gains from a high-flowing catback will be relatively minor until you have at least a DP w/ a highflow cat. The DP and 02 housing will provide more benefits on their own than just a catback, and when you do finally get a catback, you'll be much happier with the results.SRT38 said:
Oh, forgot to add this, but if you don't want a dump or side exit but still wanna save money, get an 02 sensor housing and a DP w/ an e-cutout (I highly recommend Maxxfab for both, catless if you can get away with it). You'll see even more gains than with a full turboback, and you can add whatever catback you want later for just cruising.