[dont]

I changed out my stock 2.5" ID mufflers to 3" ID Cobra packs and picked up 16 HP and TQ on a chassy dyno. For the transition I expanded the 3" tails that come out of the Cobra packs to a tight slip fit into my existing 3.5" pipes. I have the fluttering when I push in the clutch coming to a stop. There are pics in my gallery of the process.