Cadillac has built the ultimate luxury sedan, and Billy Boat Exhaust has made the driving experience even better. Our design team used a clean sheet of paper, resulting in a system that looks and performs better than our competition.
The Billy Boat Exhaust is made completely out of 3” 16 gauge 304 stainless steel (not lesser 409 stainless) for the ultimate in durability. The system uses 3/8 thick flanges, bolted together with copper gaskets for a leak free and positive fit for the life of the system. We moved the synchronized crossover closer to the headers, resulting in increased 56HP, increased 74TQ, and better throttle response with the complete system installed.
The real magic is in the mufflers, as we have used our expertise in bi-modal muffler systems to bring the 6.2L supercharged V8 to life. We manufacture our own 3” butterfly / valve assembly, upgrading the size for increased flow and performance. The quad 4” exhaust uses the factory electronic valves and maintains all the factory driving mode settings, yet the experience is taken to another level. In touring mode the tone is increased to reveal a deeper, subtle refined tone, while the sport and track mode open the valve to unleash the beast with a visceral roar that will turn heads under acceleration.
The system must be used with the Billy Boat Exhaust front pipes, which give you the option to mate the system to Billy Boat 2” tri-Y headers (best performing option, with catalytic convertors or without for track use) or to factory manifolds.
This must be ordered with matching Front Pipes that match your stock manifold or BBE headers.
Have more questions? Contact us!
The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket part. READ MORE…
We try to put as much information as possible within our product pages to help with application choice and the installation process. The business you purchased our product from can be a wealth of information, but should you need additional help and information, please feel free to call or our sales department.
Monday-Friday 8:30am-5:00pm Arizona time.
888-228-7435 x18 or 623-581-7600 x18
*Note that Arizona does not follow Daylight Savings Time.
More information in additional browser tab.