I'm sure it's flowing just as well, it just doesn't sound like it. Something in the active mufflers makes it sound slightly muffled/less open or airy sounding. It's not really a tonal difference; that's very close. I say this all as someone who's owned both the Xtreme and now the Sport catback. Truth be told, no videos reproduce the sounds of these exhausts well compared with in person, even with good mics.
I agree as well. Even though I rep Corsa, I will absolutely be honest and say if you're catless, don't go with a Corsa system. It'll sound blatty and uncontrolled. They were engineered with the factory manifolds and cats in mind.
The Sport is about as perfect of an exhaust as I've heard or had on my car. It is just right on everything. The Xtreme sounded amazing but was too loud sometimes and was missing a bit of richness in tone. Looking forward to what the 18 version of the Sport is like.
This of off topic, but since you are a Corsa rep, have you heard the new Corsa headers with either Corsa Sport or Extreme catback?
Catless LTs will give you quite a lot more volume. They don't exactly deepen the tone much either and will be very raspy. LTs with green cats would be a solid but not large increase in volume.
:lol:Yeah I love the overall sound of my Corsa Sport catback. I had Kook LTs + Corsa catback on my old Shelby, and it sounded way too blatty and raspy. I don't want to repeat that mistake. I guess I'll keep the stock headers and Corsa Sport.
Green cats are still VERY loud. Green cats are 300 cell per inch compared to factory OEM legal cats which are around 800 - 1200 depending on the car. It would be like standing in front of a screen door and yelling through it but saying the screen is decreasing volume. I've done a high flow cat (400 cell, 2011 GT) vs no cats and I read dB levels exactly the same at 15 feet cold start and 50 feet WOT. Catback systems were the SW RetroChamber, Kooks catback, and a cold start test on a Borla ATAK.Catless LTs will give you quite a lot more volume. They don't exactly deepen the tone much either and will be very raspy. LTs with green cats would be a solid but not large increase in volume.
Realistically if you want slightly louder and deeper you should probably look at a different catback, though there are compromises there too (nothing else is no drone and so quiet on the highway). A blower would make it louder
^^What Grimace427 said.
I much prefer the sound on stock headers tbh, but maybe i'm weird.
It does that unless you change the quiet start settings.
