On 07/20/2017 05:59 AM, Mad Roger wrote:
Hence, larger fitments have, essentially, no performance advantage and most
likely have a negative effect on performance overall in most cases.

But they look kewl... There is a similar phenomenon with motorcycles.
The first thing many Harley owners do is replace the stock exhaust with
aftermarket pipes. While they've gotten better at hiding it, the OEM
exhaust has a cross over between the two pipes that people find
unappealing. The new pipes may have less restriction and be louder. They
may be shinier. In most cases they also result in a slight reduction in
power. Most of the people aren't doing baseline dyno runs and retesting
after modifications. They are buying bling and working on the intuition
that more noise == less back pressure == more power.