Tried and proven this Billy Boat Exhaust cat back exhaust for the C4 Corvette ZR-1 has been the industry leader for over a decade. With unparalleled performance sound and style, this system was developed with the true enthusiast in mind.
Designed in our in-house chassis dyno this precision crafted system just says performance. 3 inch CNC mandrel bent tubing is used throughout the entire system provides a smooth balanced unrestricted exhaust flow providing increases of as much as 25 horsepower and 35 ft lbs of torque. These results have been confirmed by the chassis dyno and by our customers.
With a combination of sound absorption and cancellation, this complex yet simple design emits a deep robust bark on hard acceleration aggressive driving with a mild tone at cruise. Hand fabricated using 100 percent T-304 stainless steel this exhaust system is manufactured as a direct bolt-on replacement for the factory system and by utilizing the factory mounting locations this system requires absolutely no cutting welding or modifications for installation and includes all mounting hardware. A pair of 4.5 inch oval tips on each side gives your Corvette a bold and individual look. With unparalleled quality and attention to detail, this 50 state emissions legal system is backed by our limited LIFETIME warranty.
Fusion Exhaust Systems
The Fusion is a bi-modal exhaust system, meaning it has two passages, or modes, that the exhaust can travel through the muffler. Each of the mufflers has two outlets, with one side having a butterfly type valve which allows the exhaust flow to be shut off, regulating which side of the muffler the flows exhaust One side of the muffler is the “quiet” side, and one side is the ‘loud” side. The “quiet” side is a smaller, muffled and chambered tube, while the ‘loud” side is 3″ tubing straight through.
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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…
How a Dyno Works
We’re going to quote DynoJet directly to explain how the machine works, since paraphrasing would only do you an injustice. “Power, in mechanical terms, is the ability to accomplish a specified amount of work in a given amount of time. By definition, one horsepower is equal to applying a 550-pound force through a distance of one foot in one second. In everyday terms, it would take one HP to raise a 550-pound weight up one foot in one second. So to measure horsepower, we need to know force (in pounds) and velocity (in feet per second). DynoJet’s inertia dynamometer measures power just in this way. The dyno calculates velocity by measuring the time it takes to rotate the heavy steel drum one turn. The dyno measures force at the surface of the drum by indirectly measuring the drum’s acceleration. Acceleration is simply the difference in velocity at the surface of the drum from one revolution to the next. The force applied to the drum is calculated from acceleration using Newton’s 2nd law, F=MA, (F)orce equals (M)ass times (A)cceleration. Power is coupled to the drum by friction developed between the driving tire of the vehicle and the knurled steel surface on the drum of the dynamometer.”
“When an object rotates around a point, the object’s speed of rotation depends on both an applied force and the moment arm. The moment arm is the distance from the point of rotation to where the force is being applied. Torque is the product of the force and the moment arm. For example, think about trying to spin a drum by wrapping a rope around the drum and then pulling on the rope. If the rope is wrapped around a drum of one-foot radius and pulled with 550 pounds of force, the resulting torque is 550 foot-pounds. The torque on the dyno’s drum can be calculated by multiplying the force applied by the drum’s radius. However, engine torque is not equal to the dyno’s drum torque because the gearing through the drivetrain changes the moment arm. The change in the moment arm is proportional to the ratio of engine speed to drum speed. Therefore, tachometer readings are necessary to calculate and display engine torque.”
|RPM||Stock Horsepower||BBE Horsepower||Gains|
|RPM||Stock Torque||BBE Torque||Gains|
Download the PDF here…FCOR-0011
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