First I want to test MAK 3" off-road downpipes with no exhaust vs our own 2.5" catted pipes. I keep getting told that 3" is better than 2.5" on the truck even though it Y's into a single 3" later on....
I'd love to show dyno proof of that scenario. I also plan on doing 2x3" cutouts on the downpipes pre-Y to show if there's a difference.