Are those of you changing your exhaust doing before and after dyno runs, or do you just want it loud all the time (in which case you should just install glass packs - if you can get them to fit in the space available). Agree the sound of the V8 is most of the value of the 5 over the 4, but the factory exhaust is fantastic as-is from stealth mode to loud mode, which makes small animals jump and the cops turn on their spotlight when you drive by.
This isn't a 67 Camaro where your local exhaust shop can fab something up under an empty chassis and outperform stock. The engineers didn't leave even an extra 5 ft-bs in the table.
The Cadillac CT5-V and CT4-V Blackwings are two of the greatest performance cars of our era because of their commitment to driving enjoyment.
www.hagerty.com
“The intakes, for example: We had to design them to drive in a rainstorm and keep the water out without choking engine performance. We fought for numbers that colleagues thought were comical.”
Roma: (chuckling) “One engineer came in and said airflow results showed that particular setup cost three horsepower.”
Grebovic: “We all went nuts. Three horsepower! No way, we’re not giving that away.”
Vivian: “I almost jumped out of my chair.”
Roma: “The engineer is looking at us sideways. ‘It’s only three horsepower, guys,’ he said. ‘You already make over six hundred!’”
Vivian: “We gave him a polite, ‘Wrong answer. Go back and find those three horsepower.’”
And the exhaust:
Heavener: “As an OEM, we have to respect legal limits for sound. I remember us down there, discussing Scarface’s traits, and whether the noise during the fuel-cut upshifts was acceptable. They sounded like a .22 going off on the one-two upshift, but we decided, ‘it’s staying.'”
Gill: “There was a pretty delicate balance between the hardware and the calibration that we had to manage to make ’em legal. At the start, Mirza [Grebovic] got involved as we were trying to determine the vision. Mirza’s exact words were, ‘I want it to scare small children.’”
Grebovic: (laughing) “Yeah!”
Gill: “I swear the best phone call I ever got was one night that Mirza took a Scarface vehicle home. He said, ‘my kids cried when I started it in the garage.’”
Vivian: “I think you messaged the group chat: ‘Mission accomplished.’”
