C
capulin overdrive
Well-known member
Getting a little off topic here but...
I'm not sure if the SW kit is the same kit that's been around for a couple years now or not. The first one to come out was using a butterfly valve in the exhaust to simulate restriction, kinda like a turbo does. It seems like it took some time for them to dial in how its applied. There was one at the Jackson Hillclimbs that ran really good.
Yup it's been around while, several threads in the Cat section.
I'd try one if I had a Cat, and wish there was one for Doo.
Could have worded my post better, to give the manufacturer a better shake maybe, but hate to be the guy to recommend something and not have it work.