Speaking of catbacks I am running the Generate one Powervault catback. I have been very happy with this exhaust.

The VX is at the shop running some back pressure tests. I have the SC on and we think the exhaust pipes are too small restricting the flow. I think now that I should go up in pipes sizes. The PV catback I think is a a 2.25 pipe. Might jump to a 3".

-Dave