Audi R8: Performance Exhaust Development at Milltek Sport
Now that we've finished putting a few miles on the brand new Audi R8 it's been handed over to the technicians at Milltek have started work and will not stop until they've reached that magic balance between incredible performance, aggressive but subtle sound, and aesthetic perfection that has become the signature of all Milltek's products.
The car has been tested on the dynamometer before we started work on the performance exhaust system (see the video clip below) and the car has shown a standard figure of 391.9bhp. Since developing the exhaust system, we have retested the car and it's now producing an impressive 412.3bhp – that’s a gain of 20.4HP, just from the cat-back system!!!
It takes over 21ft of stainless steel tubing (among other parts and materials) to maintain the critical path of the gas flow away from the engine. Using the experience gained from our successful development of the Audi B7 RS4 V8 system, we have managed not only to replicate the impressive power and torque gains achieved on the RS4 but also managed to package the R8 system with a 15kg weight saving!
Milltek's Audi R8 being dyno tested to obtain the standard power figure before exhaust development
This video shows Milltek Sport's new Audi R8 on the dynamometer to test power figures prior to exhaust system development. This is done to provide accurate power and torque gain figures for Milltek exhaust systems.
You can see the AEV (Active Exhaust Valve) in action. This valve opens and closes to control the sound coming from the exhaust. The idea is to keep the noise to a minimum when cruising or driving slowly and to open the valves to increase the sound when you "Give it some!".
Although the noise of the dyno is quite prominent, you can hear the standard exhaust noise when the valves open at high rpm.
Other photos of the R8 in development:
Audi R8 Dyno Graph (un-modified)
The dynamometer printout showing the torque and power of the Audi R8 in standard form. Click to enlarge
Audi R8 Dyno Graph (Milltek cat-back fitted, no other mods)
The dynamometer printout showing the torque and power of the Audi R8 in standard form. Click to enlarge
Milltek R8 during filming of the Milltek Audi R8 commerical
The standard exhaust is in the foreground and the Milltek system is behind it.You can also see one of the Milltek tailpipes in between the two. Click to enlarge
Milltek R8 during filming of the Milltek Audi R8 commerical
The standard exhaust is in the foreground and the Milltek system is behind it. The Milltek system is 15kg lighter and offers better performance. Click to enlarge
Milltek Sport cat-back system fitted to the R8
The rear bumper and heatshields have been removed to expose the Milltek stainless steel performance exhaust system. Click to enlarge
