Graves Motorsports® EPY-17R1-CVT - Exhaust Valve Upgrade Y Pipe

Graves Motorsports did not allow compromise in the development of this system. Material diameters and lengths are optimized for maximum power output throughout the throttle and RPM range.? Graves Motorsports use the same 1.00 MM think wall high heat grade Titanium tubing used on Superbikes. This material is designed special for maximum durability and oxidation resistance up to 800*Celsius / 1472*Fahrenheit. It is designed to live at almost twice the temperature of normal Grade2 Titanium. The tubes are precision bent and cut with the latest equipment available. The tubing is then welded in fixtures designed so that repeat-ability is second to none. It comes with a single Lambda receiver bung for on track data logging or Dyno tuning or the addition of FTECU's Active Tune. The spring tabs are made from 4MM thick Titanium wire for long lifeWhat Chuck Graves the president of Graves Motorsports had to say about the release of Graves's newest line of exhaust systems, EVR and the technology behind it:"The EVR or Exhaust Valve Type R is and electronically controlled valve that improves drivability at small throttle and low RPM ranges where it matters most to the rider. The systems can also be utilized to reduce sound by a significant amount without reducing maximum power output."What makes the Graves EVR different than the stock exhaust valves that racers commonly remove when the stock system is replaced with an aftermarket race system?That's pretty simple, Graves Motorsports install it in a race system and tune the electronics to maximize efficiency. The current trend of sport bike enthusiasts has been attracted to short silencers simply for looks. Power output and drivability has been sacrificed exclusively for the trendy look. Secondly the sound levels of many of these systems has reached the level of irresponsible and annoying for even the youngest riders. The aftermarket has responded with sound inserts to bring these short power robbing systems to an acceptable level. The real drawback to this is that once the sound inserts are installed the rider can now feel the negative effect of the system and the overall performance. In most cases, I'd say 99.9% of all motorcycles that I have tested, the power output and throttle response is now far worse than the stock exhaust.With the EVR by Graves Graves Motorsports solve all 3 issues, the power output, throttle response and the sound.Who else uses this system on their race pipes?Only Factory teams are using it now and most of them are well hidden.Why hasn't this been done by the aftermarket before?Again, that's pretty simple. Cost. To drive the valve requires hardware and software. At a minimum, you need an ECU that is capable and a motor. The emergence of ECU flashing has given Graves Motorsports the ability to do this at a reduced cost because Graves Motorsports can now control the stock ECU motor controls. Graves Motorsports have designed EVR systems to accept the stock motor and cables. This makes for a clean setup.So, is the FTECU flashing system is required to optimize the EVR exhaust system?That is correct. Anytime you replace the stock exhaust system with an aftermarket racing system it requires changing the fueling. In addition to air fuel requirements, the modern motorcycle engine control systems cannot be optimized by piggyback systems. Now the flashing of the ECU is common place. Graves has partnered with FTECU to manage these strategies to enhance exhausts systems performance just as a Factory team would do.What if I already have a flashed ECU?What Graves has been telling customers is that they should purchase the FTECU flashing kit when they purchase an exhaust from Graves. Graves provides maps for the user to install in their motorcycles ECU. Graves Motorsports tell them that by having the FTECU flashing system in their tool box they can update their ECU whenever Graves publishes a new map. If they have the system already then, an updated map is all that they will need.