Just wondering what people have done in terms of exhaust mods for the G6ET (is if the same at the FG XR6T ??). What benefits have accompanied the mods and are you happy with the result ? ie perfomance , noise etc. Also what sort of dollars did it cost ? I am getting a custum tune in a few weeks for my G6ET and was wondering if a new high flow cat should be installed before hand or if the standard system will suffice. I do not want to change the sound too much if at all - prefer a nice quiet cabin these days. However, if a few more ponies can be unleashed with a cat/zorst upgrade then why not. Anyway, if you have some info to share in this regard, I would be very interested.