![]() Never shifts before red line (Normal Sport mode will shift higher than non sport but "can" shift below red line if the car is not pushed hard).ĭifference between Sport Plus and Sport Chrono Plus.Launch Control, for the best possible take off from a standing start.Sport Plus mode in conjunction with PDK is the ultimate Sport mode in a modern Porsche, in addition to the normal Sport mode it enables: ![]() Anyone with Sport Chrono can attest that the engine will rush to the hard cut off in Sport mode, where in normal mode they can obviously feel the flat spot. No one has ever quantified the difference in horsepower in the 6,800 - 7,300 RPM range, but it is there by design and undisputable. Sport Chrono Package will replace the car's Soft Rev Limiter with a Hard Rev Limiter during Sport Mode. A car without Sport Chrono will start losing power at 6,800 RPMs and continue losing power progressively until 7,300 RPMs where the hard cut off will finally be reached. It simply removes the 'Soft' cut off that begins at 6,800 RPMs and allows the engine to produce full power from 6,800 - 7,300 RPMs. How does Sport Chrono affect the Rev Limiter? - Sport Chrono does not change the cut off RPM, which remains at 7,300 RPMs on cars with or without Sport Chrono Package. All 987/997 models come with a Soft Rev Limiter. If a driver ignores this, ignition timing is retarded further until the rev limit is reached at which point the resulting cut off is much 'softer' because the engine is not being cycled on and off between full power and no power. As the ignition timing is retarded and power drops off, the resulting feeling of power loss signals the driver that it's time to shift. This usually begins about 500 RPMs before the hard cut off point. A Soft Rev Limiter reduces power output by retarding ignition timing as the engine approaches its limit. Soft Rev Limiter - Because hitting a hard rev limiter can be uncomfortable for the driver and hard on the car, manufacturers created the 'Soft Rev Limiter'. The very first rev limiters installed were all hard rev limiters. This can be very abrupt and hard on the power train as the engine cycles on and off between full power and no power. Hard Rev Limiter - The most basic of rev limiters, a Hard Rev Limiter does nothing until the engine reaches the predefined engine speed at which point fuel and ignition are shut off. What is a Rev Limiter? - A rev limiter is a safety device that cuts fuel, ignition or both at a specified RPM to prevent an engine from continuing to rev beyond its mechanical safety limit. Here is some clarification that will help you to understand some of the functions:.The Porsche Sport Exhaust will automatically switch to its' sport sound.(PDK also has Sport+ mode, more info below) The Triptronic S/ PDK transmission will switch to a more aggressive shifting map that keeps the engine ready to go.The Soft Rev Limiter is replaced with a Hard Rev Limiter allowing you to get full power all the way to redline (more info below).(In normal mode PSM triggers if one wheel is about to lock up, in sport mode it triggers when two wheels are) PSM (Porsche Stability Management) intervention limits are increased to allow more aggressive driving without triggering a system response.PASM is switched to Sport Program to provide more crisp handling and less body roll.The drive by wire throttle map is changed making the car feel more responsive and making 'heel-toe' downshifting easier.When the Sport Chrono button is pressed, many things happen including: This option takes control of many of the Cayman's on board systems delivering absolute sport driving characteristics. Like PASM, the truth about the Sport Chrono Package has eluded many automotive a journalist, many of whom have suggested that Sport Chrono is nothing more than a $920 stop watch, but Sport Chrono is much more than that. ![]()
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