I had a chice of two different cars that were similar in options. One had sportchrono and the lobster forks, the other had the sportadaptive seats the 5 spoke wheels and the sport shifter. The price was similar. I read all the forums and went for the one without the SC but with the other stuff. In my opinion the other options out weighed the SC option.

 

Query, will a Carrera/Carrera S with the Sport Chrono option activated turn faster lap times or ET’s than a similar Carrera/Carrera S without the option?

 

Obviously not. 100% driver skill.

 

Ive driven a 2006 Carrera S and the Sports Chrono is a MUST.

First it looks good
Second it makes the car more responsive.

I would add the Sports Exhaust too, Its not exspensive compared to aftermarket and plus its simmilar to the high end Ferrari exhaust system that feature bypass button/option.

 

I think it's all a choice of user preference. Ultimately you still have your 325 or 365 hp, but how it's delivered do make a big difference for me. I had an E46 M3 and the sports button was a bit useless for me, and makes the car too touchy. Then again, the S2000 had 240hp, but basically nothing until after that Vtec kicks in, so ultimately not very useful daily power.

As for the 6speed vs. Renn debate, I think the 6speeders are a much more close knit group.

I have yet to encounter a 1999Cab debacle on this forum. I hate to say it, but I first jumped on Rennlist/tech because it was easy to sign up and register, but moved on over to 6speed because of the people.

 

I’m confused. If what Sport Chrono offers is “not fake or false power� I would presume that, driver skill not withstanding and all things being equal between the cars except SC, you should be able to turn faster lap times or lower ET’s in a Carrera/Carrera S with SC activated as the antonym of fake and false is genuine, real, true, bona fide, authentic and indisputable. If the power offered by SC is real (and not fake or false) then I would presume that a car with SC is in actuality faster then one without SC. If not then how do you explain the power not being fake or false?

Also, does having SC which makes a car more “responsive� translate into making the car any faster? I’m not interested in hyperbole, I just want to know if SC will lower lap times or ET’s.

 

this graph pretty much says it all.

 

Thank you for the graphs and manufacturers advertisement on the Sport Chrono.

By looking at the graphs it appears that with SC the last 30% of pedal input is useless. Also, the torque curves appear to be very similar only more front loaded with SC as I see no overall increase in power, only more torque offered for a lesser amount of throttle movement which means that the torque difference can easily be made up by more simply applying more throttle.

Again I ask (for the third time) not withstanding what the brochure says, have those of you with SC seen lower lap times and ET’s with SC?

 

I'm sure the naysayers will fully discount my reply. But yes, I did run faster lap times with it on. I'm sure it has as much to do with the dialing back PSM as with being able to get on the throttle faster while exiting turns. Like I said, max power may stay the same, but it moves into a more usable place which inturn makes for faster laps.

I let a friend who is a worldclass pro rally driver run it recently and he had the same results as me. Not huge differences, but a difference...

BTW: My previous posts refering to "decent drivers" had nothing to do with my own driving abilities (or lack there of) or my judgement of others here or anywhere. It was an objective statement about perfomance driving and adapting to minute changes in general. I have been Crew Chief for numerous front running pro race teams, I think I'm qualified to differntiate what makes a "decent driver" or not...

dw

 

seems like the tip guys get the most out of it....

 

The power curves do not change at all. If you compare power and torque curves between a car with SC and one without they are identical. The only thing that changes is the amount of throttle pedal travel to get there. Porsche makes no claims for additional power or torque and no one independantly has produced dyno charts that show any difference. It's pure placebo. The only difference is with PSM which allows greater slip angles on Sport before intervening.

 

of course a dyno plot measured at WOT will show the same numbers, especially peak. That doesn't mean that mid-corner when I'm not at WOT yet but just getting back on the power that I'm not getting to the power faster with faster throttle response. The motor revs faster, plain and simple. Go try it. If it revs faster then I can get to the usable (most desired) part of the rev band faster.

Not to mention that since we are talking egas 100% pedal does not always = 100% open at the throttle body. There is considerable computer interpretation and interaction. With SC-on this algorithm is modified for less interference and more direct control not just with ABS but throttle as well. Even with PSM off, w/ SC-on I need to engage ABS with two wheels before the ECU ***** slaps me by cutting the gas even though I might be wanting WOT by then...vs only one wheel with it off. One wheel ABS engagement happens a lot on track...

there is also the hard rev limiter vs the soft one as well, which not only keeps me from running lean when I bump, but lets me actually rev a bit higher at the top of the limit.


for the cayman S, porsche testing showed a 3 second difference in lap times on their Nurburgring test track. I know, more marketing hype so porsche can make and extra $900 on each sale. Something tells me their costs for the added electronics and R&D are barely covered at that price...

oh and the above article forgot to mention the IR port that lets you download your all lap data to your laptop if you have PCM too.

dw

 

Simply not true. At 3000rpm the power and torque figures are identical between an SC equiped and a non SC equiped car. The same applies at 5000rpm and 7200rpm. The power curves do not change one iota at any point you care to name across the whole of the rev range. What changes is the angle of the throttle pedal and the amount of travel for any given point in the rev range - a completely different concept.

If you don't believe me check with PNA and they will confirm what I'm saying.

 

can't you achieve essentially the same thing as "SC" by switching PSM off, switcing PASM to sport, and depressing the throttle an extra 20mm?

SC seems like a macro function on a home theater remote. Convenient, but the same thing can be accomplished with a few extra steps. I suppose without SC you can't time your laps or tweak your tiptronic, but then again most of us don't do track days or drive automatics

 

No dog you can't. Even with PSM off, it not off 100%, and the threshold to bring it on is lower than it would be with SC-on.

Chef, what you are saying is that at 100% throttle power is the same between SC and non-SC. I agree. This is evident from the graph that is posted as the two curves converge at 100%. But the lower portion of the graph (at part throttle) shows you get to a greater amount of torque sooner. Its not about more overall power, its about more power in more usable places. Like a dyno 1/4 mile ETs will not be any different either as the whole thing happens at WOT, on off on off...its segmented times through mid corner into exit that improve, and on a certain tracks this can equate to significant gains on overal times.

Ask ernie at Mantis MS if he runs with SC on or off...I gaurantee they are running on.

dw