Jba Long Tubes need a set of mid pipes. Mid pipes connects the headers to the catback. The mid pipes might as well have catalytic converters in them. BAMuffler has done extensive testing to conclude there is zero loss of hp with cats. Power is exactly the same. The only difference is low end torque. With cats you get better low end torque. And the best cats to use is low mileage stock casts. These are completely custom built.
Cats are aluminium or stainless steel. Welds are stainless steel. Tubing is stainless steel. Flanges and hangers are solid half inch thick steel. These baby’s are stout! Also they bolt on using simple hand tools with no check engine light and 3″ in. Gains 49hp and 89tq