Full exhaust system for Audi A7 3.0 TFSI
In the Research & Development department of Supersprint the
full exhaust system for the Audi A7 3.0 TFSI is under development.
This car is equipped with a gasoline V6 Engine, with the compressor fitted inside the V of the cylinders.
300 hp from 5250 to 6500 rpm and 440 nm from 2900 to 4500 rpm, along with a nice and discreet classic V6 growl and the efficient double clutch S-Tronic gearbox, make this car a capable cruiser but with convincing performances.
Following the Supersprint tradition, the target is not to change the nature of the car, losing comfort in the process, but to make the engine note more pleasant and characteristic without being excessive, and to increase the performance.
Obviously the looks have their importance!
In the picture gallery you can see the car while it's being tested on the dyno, both in stock configuration and n the next phases of the exhaust development.
The claimed figures have been proved true, they are even slightly better: 306 hp and 445 nm.
The system is composed by two rear exhausts with a free-flowing design and round, slash cut exits, 120 mm in diameters. The aesthetics are convincing, with the bumper arches perfectly filled out and a good proportion between the car and the exits sizes.
As our designers have already worked on the A4 S4 3.0 TFSI, a car that shares its engine with this one, they have been able to decide from the start the right size of the
centre silencer on the "X-Pipe", to avoid any drone inside the cabin but leaving the sound on the outside pleasant and personal.
The cats, as in the Supersprint tradition, have been replaced by
HJS metallic sports units that allow a major decrease of back pressure but keep the pollutant gasses in check without turning on the CEL.
Sadly, the dyno testing in the various configurations, with just the rear exhausts, with the x-pipe and even with the sports cats, have been very similar with each other. It seems the engine is not responding well to the modifications of the exhaust alone.
As we're not satisfied the development process is not finished. As you can see in the pictures the headers will be replaced too. Two different design are being tested, with different primary pipes length.
The stock headers are very simple and cheap to make, so a sensible performance increase is expected, thanks to a better division of the exhaust gasses from the cylinders, to the bigger primary pipes volume and to the different position of the cats, moved more toward the back of the car.
More updates will follow, with dyno charts, videos and pictures of the system complete with headers.