Exhuast
The exhaust system was built and fitted by Tony Banks Custom Exhausts. Tony Banks systems are handmade using aircraft-quality T304 British Stainless Steel with a 2mm gauge wall. They assembled my exhaust on-site using T.I.G welders and only used T316 stainless welding rods of the highest quality. The exhaust is free-flowing with tuned pipes and no restrictions or chambers. These guys are smashing exhausts on everything. Check out their Facebook page.
My 2.5-inch exhaust has a deep note and gently pops and burbles on the overruns (no gunshot bangs). The exhaust note, however, is not as loud as the ITBs, which drown the exhaust out when the engine is rev-ed hard.
They guarantee their exhausts for the life of the car. I brought mine back down after I clipped it and split it, just after the four-branch manifold, on a raised manhole cover, and they added a new flex and flange for only £108. I highly recommend them, but be sure to tell them how loud you want the exhaust note to be, as their default is Aston Martin V8 loud.