What's wrong with this picture?

When graphically comparing the torque and horsepower curvesfor the Cayman Swith the Carrera and Carrera S, sorry don't have a similar graph for the Boxster S, the flat power curve between 4400 and 6000 stands out. So it would be good to get a hold ofthe unpublished power curve for the Cayman S engine in tune to see if the power curve has a more organic, rather than an artificial-computer limited, look to it.

Good choice of words, organic and artificial. You can pretty much see where it would end up... You know though, the flat, artificial looking torque curve (line! might actually bemore useful on the street.

Looks like you both may be right. There may be some missing higher torque, on the other hand having a 1600 rpm band of equal torque looks ideal for autocrossing when there is often too little time to shift. Also should give some greater flexibility when exiting corners on the track. I think it may be a good thing all things considered.

Why the dip at 3500??? I've never seen that on any other Porsche dyno chart...

Very interesting. Thanks to all youon this site, I'm really learning a lot!!!

I asked while back about the 3500rpm dip - I don't recall if there was a good answer - it is interesting when compared to the 911 where there is no dip. I have not seen the Boxter graph, but I suspect that there will not be a dip.

At 2500rpm the Cayman has more torque (310) than the base Carrera (295-ish) but it is the bit below this that feels underwelming in my car. Below 2500 there is very little, certainly not enough to unstick the back wheels even on a greasy road. And there doesn't feel like the dip you see on the graph. the acceleration is pretty relentless from here up. And again, the long 1st and 2nd gear (I am right here, aren't I?) and that lack of super low torque make the acceleration in those gears feel,mmm, at odds with the feeling in all subsequent geers. There feels like tonnes of torque in 3rd 4th and 4th, where it feels lacking in first and second. Would they electronicaly limit the torque in these gears? Because that is what it feels like! Jack

I have a question, does anyone know if the Carrera 3.8S programming can be applied to the brain of the Cayman S 3.4L? Assuming the ECU chips are the same it would be interesting to see the results of simply applying the 3.8S programming to the 3.4.

Jack, I believe that 1st and 2nd gears are shorter, not taller, than normal.

given that most controls (throttle etc) are electronic and the stroke and capacity are somewhat smaller, you'd end up with serious over-fueling, unless you could remap the ECU . has the ECU been cracked?

Remember that Porsche does their homework very well, and they bring "engineering" to their marketing. The performance goals are determined first and the engine and transmission are designed to meet those goals. Porsche has also become very good at developing a total package of performance and drivability that is extremely difficult to preserve when you go tinkering around.