Been a member for a while, so thought it time it do something with my vehicle.
First 2 things, unifilter and exhaust.
Unifilter made a small difference, now for the exhaust...
Ripped out the rear cat, and went 2 &1/2 from there. Single offset muffler. Well it's got quite a bark, but geez, a drone at about 1800-2000rpm under load... me thinks a resonator on Monday....