Here is some literature for those that are interested, those that cannot be bothered, keep scrolling. Please excuse the Japan-a-glish, it was directly translated from Mugen Japan. >>
What is required for the development of the exhaust manifold is having equal length of pipes and perfect exhaust gas flow. On the dynamometer bench test, the pulsation, resonance and inertial effect of the exhaust gasses emitted from each cylinder in addition to the connecter’s position of the primary, secondary, and collector as well as the pipe’s diameter were studied to find out its optimum layout by delicately adjusting each length of the exhaust pipe and repeatedly making and trying the different configurations.
Furthermore we would like to recommend High-Performance Engine Oil VT-α, which fulfills the hidden potentials gained through MUGEN manufacturing technology. This engine oil is 100% chemically compounded oil of SAE 5W-40 developed through repeated bench tests to be suitable for the Honda VTEC engine. High specification engine oil possessing proper viscosity; and with newly developed additives (MODIC: organic molybdenum), it can hold an oil film under severe conditions. Though performance of the engine oil is in no way inferior to that of the racing engine oil, it also has oxidation resistance and low temperature stability ideal for street use. MODIC, organic molybdenum can quickly be penetrated into the metal friction surface where it makes a smooth metal surface by forming strong lubricating surface which in turn reduces the friction resistance and minimizes the loss of engine power as a result. Proven by bench-testing.
We believe that the oil line also plays a very important role. The MUGEN oil filter is exclusively developed for naturally aspirated engines and has “Y” shape cross section rather than a round cross section of the ordinarily fiber filter material. By adopting the “Y” shape, we were able to succeed in reducing the sludge reentering into the system with the sludge efficiently stuck on to the filtering fibers. At the same time, pressure loss is reduced by 10% and significantly increases the high temperature resistance capability.
In addition to the exhaust system which was covered yesterday, a suspension package was also installed tonight on the Audi A7. The STaSIS package included a set of touring lowering springs and a rear sway-bar.
Suspension: Responsive and Refined – STaSIS carefully balances the interdependent systems of springs, sway bars, and dampers with ride height and alignment, drastically improving grip without sacrificing comfort.
Our Touring suspensions lower your stance for better weight transfer while maintaining the factory Drive Select functionality. We’ve engineered an increased spring rate to improve your car’s response, and high-performance roll bars for added corning group, giving you an introduction to the exotic performance experience. Our Street Sport suspensions, available for some models, add customizability, allowing you to adjust your ride height to meet your personal needs.
Our Challenge suspensions go a step further, unleashing your car’s ultimate potential. We use Ohlins SL coil-over technology and STaSIS double digressive valving for factory-level ride comfort with competition-level response to driver inputs, This suspension uses increased spring rates and anti-roll bars to improve driver response and reduce body roll. For the extreme enthusiast, we offer Motorsports suspensions for some models, giving you the ultimate in customization capability.
Newly arrived are a bunch of pipes! Actually, it is the STaSIS exhaust system for the 2012 3.0 Audi A7.
STaSIS exhausts are designed to reduce back pressure for more power and efficiency. You’ll have a powerful tone at full throttle that stays refined during your commute so you can take care of business while enjoying your ride.
Our lightweight, free-flowing, T304 stainless steel exhaust systems work in harmony with the engine tuning software. The mufflers incorporate reflective and passive technologies to optimize sound and minimize back pressure, while maintaining low levels of cabin resonance at cruising speeds.
Combined with tunable resonators, the sound is noticeably deeper and more aggressive without intruding in the cabin during normal driving conditions. You’ll experience a number of benefits:
Optimized sound – Resonators and mufflers combine to give an exhaust tone that is perceptibly deeper and stronger with an aggressive throttle, without intrusive cabin noise at cruising speeds.
Optimized performance – Our exhausts add horsepower to your vehicle. For even more performance gains, combine an exhaust with STaSIS engine software.
Tunable resonators – Some models offer customer-tunable resonators to customize the sound to your personal ideal.
Compatibility and ease of install — STaSIS exhaust systems are designed to work in concert with our other performance products., and offer a direct bolt-in replacement for the factory exhaust. No welding or fabrication is required. Our two-piece, long-length design provides out-of-the-box fitment, without needing multiple adjustments or customization.
Information from HKS Japan;
The key item of exhaust back pressure control with knowhow of HKS CZ200S(CZ4A). Maximization of performance from stock turbine is the concept of the product. Extension portion and front pipe portion are connected with a flexible joint. It improves “durability” that is an important factor of tuning. It offers new tuning possibility for EVO X.
• As stock turbine is small, it has good response at low rpm. At high rpm, due to exhaust resistance, feeling will be worse. By improved exhaust efficiency, boost pressure will increase earlier at low rpm and power & torque will be increased for whole rpm range up to high rpm.
• CAD designed complicated but ideal shape is manufactured with lost wax casting. Since lost wax casting items do not have welding portion, there is no problem of cracking by heat and the smooth surface guides exhaust gas flow smoothly.
• The turbine outlet is 2 ports independent shape for swing valve side and turbine impeller side to reduce resistance due to interference of gas.
• For street use, connection of extension and front pipe is flexible joint type like stock system to reduce vibration and to improve durability. Even lower side exhaust part is hit, it prevents damage to the engine or turbine.
TODA Exhaust Manifold for the 2006+ Honda Civic Si (FD2)
TODA competition exhaust manifold is developed based on data acquired from competition and continual engine dyno bench testing. It is designed to extract every bit of horsepower from a modified normally aspirated engine with attention paid to improving power all over the powerband.
Originally designed for the Japanese spec Civic Type-R (FD2) chassis. Primary Runners Secondary Runners Middle Section Collector 45mm 50mm 55mm~60mm 60mm
• For Competition Use Only. Factory Catalyst cannot be used.
• Compatible with US 4 door Civic SI (FA5 Chassis) under the condition both exhaust manifold and TODA exhaust systems (18000-FD2-00J) are used together.
• OEM O2 Sensor harness extension included.
Attention Competition Use Only: Vehicle modified by the use of competion parts may not meet the legal requirement for use on public roads.
TODA Exhaust System 2006+ Honda Civic Si 4 Door (FD2)
TODA Racing USA has concluded our test of the exhaust manifold and exhaust system orignally designed for the new Honda Civic Type-R (FD2) chassis. American spec Civic SI features a shorter catalyst compare to the Japanese Civic Type-R, which is un-heard of since any Honda enthusiasts that owned a B-series from 1990~2000 would know it was the opposite. Some of the significant difference in chassis/exhaust hanger designs are listed below. Since the factory catalyst in longer on the Japanese spec FD2 Type-R, which means the B-pipe after the catalyst is significantly shorter. Consumers would have to purchase both the exhaust manifold and exhaust system together if they intend on using TODA exhaust on their American spec Civic SI.