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I have just got back from the dyno.We decided to see what a stock Cayman S V's Cayman S with a ECU Fash would do.Man is it hot in Atlanta today.
The results are as follows[img]/UserFiles/Dyno Cayman ECU.jpg[/img]
Jim Ellis Porsche
Porsche.... The driving experience is utterly unlike any other. When it comes to the finest in workmanship, technology, and exclusivity, there is no competition. Along with our certified sales professionals, we have the most highly trained service technicians in the industry. Most importantly, after 24 years with Porsche, we have a long history of customer loyalty and commitment to customer care that sets us apart from the crowd. We relish selling and servicing one of the most desired brand names in North America, Porsche. We welcome you and we hope you enjoy your visit - virtual or preferably, in person! We look forward to seeing you.
Did you have some way to bypass the abs, psm, sport failures for the test?
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
Brian.You need to pull the fuse for the PSM,Fuse #C10.It wa so hot in the ATL this morning that on the 3rd pull we got less hp than stock.
The Flash is our own and on this car we turned off the throttle shut down.What this means is when braking you have 100% throttle.It seems to be a hit with the track junkies.
Neil
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
Using what seems to be the standard 15% loss of power from motor to wheels, this would suggest that the bone stock CS is putting out around 308hp.
I suspect (& would expect) the crank to wheelslosses in the Cayman are below 15%. In addition,it is generally inaccurate to compare the results from one dyno to another (i.e. Porsche's to Orton's).
Dan.After we flashed the ECU we did 3 runs and on the 3rd run we lost power due to the heat as it was over 100 F.The drive train loss is between 15-18% on a Cayman.
<blockquote id="quote">quote:<hr id="quote" noshade="noshade" height="1" />
Dan.After we flashed the ECU we did 3 runs and on the 3rd run we lost power due to the heat as it was over 100 F.The drive train loss is between 15-18% on a Cayman. <hr id="quote" noshade="noshade" height="1" />
Neil
Hope you don't mind more questions, but it's hard to compare the available chips (not to mention exhausts & intakes) & their respective performance claims. Hopefully, information will make for better consumer decisions & avoid repetitive questions for you.
How many base runs? Are the posted results avgs or the most favorable runs? 5th gear (0.97) pulls? Pump gas (93)? Are you planning a re-test underless extremetemps which would providea better indicator of what we might experience?
BTW, 15-18% losses seem high to me. Is that a generalized range or foryour high temp testing conditions & w/your dyno?
Neil - how about a run with your headers ? Give the Millteks a run for their ( actually my...) money. Please explain the 100% throttle part of the flash. I simply don't understand what you are describing on that point.
We will be dynoing with the headers next week.What the 100% throttle means is that when you are heel & Toe you are able to plip the throttle becuse with egas when you brake it cuts the throttle.What we do is map the ECU so that 100% is available when the brake is applyed.
Stay tuned a550hp 3.8 twin turbo Cayman S is next [img]/fckeditor/editor/images/smiley/MWPX/regular_smile.gif[/img]
Stay tuned a550hp 3.8 twin turbo Cayman S is next [img]/fckeditor/editor/images/smiley/MWPX/regular_smile.gif[/img]
Seriously? I Would like to know what this car drives like. Definitely would need the LSD with that kind of power.
LSD - Limited Slip Differential
A limited slip differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity.
The main advantage of a limited slip differential is found by considering the case of a standard (or "open") differential where one wheel has no contact with the ground at all. In such a case, the contacting wheel will remain stationary, and the non-contacting wheel will rotate freely– the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, thus the vehicle will remain stationary. In everyday use on typical roads, such a situation is very unlikely, and so a normal differential suffices. For more demanding use however, such as driving off-road, or for high performance vehicles, such a state of affairs is undesirable, and the LSD can be employed to deal with it. By limiting the velocity difference between a pair of driven wheels, useful torque can be transmitted as long as there is some friction available on at least one of the wheels.
To see the installation of a LSD style unit Click Here -> Article Forthcoming Stay Tuned