Is it worth buying a catted prochamber for stock manifolds? I plan on going long tubes with a catted prochamber but not for a long while still. I'm gonna give the car at least 10-20k miles to get any bugs worked out so I don't have to worry about the warrenty. Will you see much of a change with the catted prochamber over the stock h-pipe, even without headers? Would shorties be a good choice until I do decide to go with long tubes? I know they're about worthless on most cars.