DownrangeFuture
Electronic Repair Genius
Ok, I understand this, but does it matter if they don't flow exactly the same?
The stock setup utilises the same h piece. Since the glasspacks have significantly less restriction, whether they flow the same or no is essentially irrelevant.
Since when has the stock muffler used an "h" piece? It's a single pipe going into a car muffler. And why is using the pipes at 100/25% efficiency better than say 75/75% ? Either way it's going to flow tons better than stock, and the cat is the most restrictive part of the whole exhaust setup anyway. Honestly, unless you're doing a full exhaust and removing the cats, then any "slightly better flow" argument is moot anyway.
Or is my recollection of fluid dynamics failing me and the most restrictive part of a system suddenly stopped being the determining factor of restriction?