DynaTech 1 3/4" Longtubes with a catless X-pipe. I already have the B&B Bullets so this will complete my exhaust. The reason for the tune is because I know I will be throwing codes and the fact it has never been tuned before. I will be getting an intake manifold and cam this summer as well, so I want to get a base tune now, then I will get retuned after the cam and intake manifold.