I'm thinking about upgrading my exhaust system and having a problem convincing myself that a 3" dual exhaust system with separate mufflers would flow any better than a 2.5" dual exhaust with the same configuration.
Here's what I'm thinking. If you have a 3" downpipe going to a 3" cat or test pipe and then a Y that splits into two 2.5" pipes, how does an extra .5" really gain you anymore flow than if it Y's into 3" pipes?
Wouldn't the flow limit be the single 3" pipe that the exhaust is coming out of and not the two 2.5" or 3" pipes?
Here's what I'm thinking. If you have a 3" downpipe going to a 3" cat or test pipe and then a Y that splits into two 2.5" pipes, how does an extra .5" really gain you anymore flow than if it Y's into 3" pipes?
Wouldn't the flow limit be the single 3" pipe that the exhaust is coming out of and not the two 2.5" or 3" pipes?