askoncemore
New member
Has anyone tested where the restriction is on the Ecoboost 3.5 exhaust?
I have non-catted 3" downpipes and want to know if the 3rd cat, resonater, or mufflers are the next bottleneck.
When I say tested I am referring to installing a pressure gauge between each of these items.
I have non-catted 3" downpipes and want to know if the 3rd cat, resonater, or mufflers are the next bottleneck.
When I say tested I am referring to installing a pressure gauge between each of these items.