I kind of took it the other way, either no one knows but suspects it CAN, or people know but choose to not comment. Maybe that is my own private bias though since I really want the answer to be yes .

If any of you fortunate Sport-Owners want to trace your switch that would be a good start? Or is there a schematic of where the switch connects to?

 

here is a blanket statement that is correct-any owner who orders a turbo without a turbo sports chrono deserves to lose 20 grand on the trade in, and to the poster, i hope that you were wise enough to pay way under market value for this turbo, which is a compromised car. porsche ought to make that option standard-who would want a turbo that cannot live up to it's potential? before i purchased my new 09 turbo, i looked at used cars. i found a beautiful low mileage 07 turbo that looked too good to be true-after carefully looking, i realized that it was missing the sports-turbo chrono-i wouldn't buy that car at any price. i just can't see who would want one without this option

 

I actually kind of wish I ordered mine without it, knowing that I would be changing out the suspension/tuning anyways. Agree with TTdude on this one.

 

Lose $20K? I disagree. While the majority of people on 6speed would pass on a non-SC option, the used car market is another story. There are plenty who would jump on a turbo in excellent condition whether it is has SC or not and you are not going to "lose" 20 grand.

 

Yes, the non-sport one I got was cheaper. At the time, I was only thinking of a C4S until I found this beauty, (though lacking the Sport option). At the time, in my mind, (correctly or incorrectly) it was the same potential of the Sport, for what I "believed" to be a little knowledge and a $1 toggle! Hence the posted question.

I actually believed someone would have asked ages ago, so I thought this was going to be a quick, yes/no. I would agree if buying new I would have ordered it, but given the option list on these cars, finding a 'perfect one' is hard, so I was willing/still willing to lose the Sport.

But I would LOVE for someone to tell me something like , cluster 15, ground and pin 30, and you are good to go! That would be GREAT!

 

Ivan, if I were serious about this, I would call also EVOMS, GIAC, or Protomotive.

Whether to get Sport Chrono is a personal choice and we should all be happy because either way it's among the fastest cars in the world. I am discussing this only because it's interesting to me, not to be critical of anyone's choice at all.

That out of the way, one more point : I know it's been said that a tuner's ECU mod, be it GIAC or EVOMS or whatever, could replace the Sport Chrono function. My opinion is, I don't think so.I believe that if you want to be exact about this issue, both do increase power, but they are NOT the same.

Here is why (I think):
The tune increases/manipulates boost, ignition timing, afr across the rpm range, and for as long as safety parameters allow (no time limit);
a Sport Chrono only does it for a short amount of time, 10 sec. or so, and only from around 2000-5000 rpm.

Why does it matter? In both of the tunes that I've tried, EVOMS and GIAC, the Sport Chrono when activated gives additional power to the tune. The car is noticeably faster when Sport Chrono is activated, with either of these 2 tunes, in my experience.
So it seems the Sport Chrono is beneficial EVEN when you have an after-market ECU tune. Any expert please correct me if I am wrong.

 

With SC, that is the way the tune is programmed. The button itself isn't some "magical" power button but rather allows electronic access to the timing maps and boost to deliver more power. For cars not equipped with a sport button different programming is utilized to access those same maps for which the button allows. Power is all controlled electronically whether you want to do it through the pedal AND a button (SC option) or pedal alone (non-SC option). There will be no difference in power between an ECU upgraded car with SC and non-SC if programmed correctly except those with the SC option will have to remember to push the button.

 

D.,

Very good points. I agree with (2), more or less , but not (1).
There might be no difference in absolute power, yes. But...whether a tune could access the same exact function/timing-boost maps & tables brought by the Sport mode button: I am NOT sure, maybe not. Reason is the Sport Chrono is a mid range function with 10 second time limit.

Bottom line, I think: It will be very very interesting to dyno your car versus a Sport Chrono EVOMS car and compare boost/power/torque curves. I don't know but I bet they won't look the same. I agree that we don't even know which one will look "better."

I also agree that when it comes to this one function, power available with an ECU tune, the Sport Chrono may not be an advantage. Was your car ever dyno'ed?

 

Hey Can,

I don't know the answers for sure either since I am not a programmer but am only repeating what I am told by at least two different tuners. A dyno comparison would be interesting; however, one would have to collect enough dyno runs under "identical" conditions to make it statistically relevant since even two cars with identical mods and ECU tunes may not produce exact dyno graphs. In many cases, multiple pulls are necessary to achieve the optimal result. Tuners publish their best run which may not necessarily be the average or representative run.

PS If you're ever up in my neck of the woods, let me know and you can check it out with your butt dyno. Knowing you, it will probably be more accurate

 

Well that is obvious, but no where close to what I'm getting at.

Assuming the ECU and other programmed/firmware modules are the same with SC, and non-SC, (which I'm sure can be confirmed when looking at the part numbers from SC and Non-SC cars) ... the code for all the alternate fuel/boost/timing resides in the firmware of all cars. Its just an actuator that triggers a register that tells the software, "SC has been pressed"

Simplified code example:

if (Button_SC)
{
BoostMap(1);
PSM(1);
// insert other actuators
}
else
{
BoostMap(0) ;
PSM(0);
// insert other actuators
}


I've come to the conclusion that no one here knows the answer (or at least feels compelled to say); which is fine. If anyone beyond myself is keen/able then following the SC switch to its toggled pins would probably yield the answer, (weather that is yes or no).

I'll end with an example: My previous car was a 1993 Stealth Turbo. That car produced 9.6 PSI at 300HP. The next year they upped the pressure to 11psi which gave their 320HP rating. The change (besides a new tranny which was underpowered already) was to change the control waste gate to open up at 11 instead of the previous 9.6. All the same hardware otherwise, including injectors and a fuel map that would go up to 14 PSI, (at which you would lean out since the injectors could not flow enough fuel). Basically, everything was there and just needed 1 component to realize that potential (or more with a bleeder). In the case of the Porsche they have electronic mechanisms for all the changes, so it should be even easier to activate.

 

What's obvious is your uptightness over the fact that you should have purchase the SC option to begin with.

 

I'm not the one suggesting "magical powers", or clearly NOT reading this article from the start and realizing I had placed a little more effort into question then thinking the button caused SC, nor claiming up-tightness on anyone.

Hypocritical much?

Anyways, back to the article/question and hopefully avoiding questionably-helpful opinions; if anyone ever traces SC that would be great, otherwise, this article is kind a dead... ?

 

I'm suggesting "magical powers"??? Please don't misrepresent me and then attack me. Clearly you can read but your comprehension is woefully lacking.

 

LOL. Sure will -- does LA mean Los Angeles or Louisiana?

The only thing I am sure of is my ears; I got audiophile ears and I could hear. Butt dyno is extremely unreliable like everyone's else's.

This has been a good discussion. It makes me think more about a subtle but important point: How *any* ECU tune was created. Was it optimized with SC on or SC off?
I believe that at least with GIAC, the tune is optimized for SC on. When I had EVOMS, it was also much more powerful with SC on.

Now I am REALLY curious about my own GIAC tune. I have the dyno with SC on. I wonder what SC off looks like!

Ivan, sorry for the off topic posts. I don't think anyone will want to reply to your probably very complicated question on open forum. You might want to give GIAC a call.
GIAC
1350 Reynolds Ave, Suite 106, Irvine, CA 92614
949-724-0014

 

City of Angels