Thank you for bumping this thread I was meaning to do it after this past weekend's drive...
I just noticed this in my T - manual with sport chrono. First time I really investigated sport + and boost since I bought the car. 92 degrees outside, 800 ft altitude. In normal and sport mode, the max I could hit was 12 psi. In sport +, I was hitting 13 psi consistently at 5k rpm it was whipping into 14 for a split second on shifts. Also, boost response is WAAAYYYYYYYY better in sport plus. You get 6-10 psi with very little throttle application. I changed my individual mode drivetrain setting to sport plus. Its like you get a free mild tune for the car. This alone is worth the cost of admission for the sport chrono pack if you ask me (even in the manual).
Another thing I found that could be interesting for 991.2 manual owners with sport chrono...
The "poor man's launch control" (depress clutch and floor gas) instantly pins the revs at 4k rpm, but its different between modes. In sport mode when you do this there is 0 boost. In sport plus you get 2-3 psi of boost and the turbos are preloaded for the launch (even though the dash doesnt say "Launch Control Activated" like in the pdk). I havent released the clutch and tested it out yet because I havent found a safe place to do it, but its nice that you have options for the launch. The sport mode launch seems to be easier on the drivetrain (as it was in my Macan Turbo - it pinned the revs at 3500 vs 6000 for sport +). Neither sound as violent as the pdk launch sequence... not even close... the pdk launch control sounds like the engine is eating itself

 

Also, on that track day, the true water temp was around 221, according to the Torque app, while the PCM showed the usual 194. I was in Sport mode, but on the 100-degree day, the cooling system was unable to bring the temp down to the usual 185.

Oil temp peaked at 246 degrees on Torque, but touched 260 on the PCM.

It would be nice, in general, if Porsche trusted its drivers with accurate instrument readings.

 

 

Is it possible sport mode makes the claimed HP, and sport + gives you a little extra? Im gonna measure boost via the obd port using a handheld and report back this weekend.

 

I agree with usccharles on his assessment. I don't think sport + mode gives more HP. If that was the case, Porsche would be advertising that one of their options (i.e. SC) gives more HP and people would buy it like a hot cake.

Clearly the torque and HP curves change between modes because their max boost is occurring at different points in the rpm range but I think what is happening is that both peak HP and Torque are being constrained electronically to their advertised max.

 

Someone needs to dyno their car in each mode and get to the bottom of this!

 

The video requested is of very bad quality when uploaded. Here is
a screenshot using sport response. I know this # is crazy for a base
stock 991.2 but here it is. My car seems to pull harder than a
.2 s I test drove. It is what it is. Flame ready.

 

 

If you bought it used its definitely been tuned! Lol. If not im gonna do my next service at your dealer

 

Just to make sure, the number 18 in the middle of the sport response dial is the numbers of seconds remaining for that button push.
Just above it you can see 0 psi boost..

if you knew that then nevermind.....

 

HAHA... surely the guy doesn't think the count down is the boost pressure! Say it isn't so!

Here is what I found...

Base/T: progresses to 10 below 5k then peaks to13 around redline
S: progresses to 13 below 5k then peaks ato 17 around redline
GTS (powerkit): progresses to 16 below 5k then peaks to 18 around redline

Powerkit give you significant torque in the mid range, but does slightly lag (torque comes in at a little later RPM).

Regarding my S: At low to mid RPMs, sports mode seems to let the car respond quicker (turbos primed?) than normal or sports plus, which seems to be better for revving it out (turbos stay spooled longer). Sports response button makes the car act just like sports plus, but does seem to allow slightly more boost (+1?). If you use sports plus and sport response button, you can spike to 16 PSI in the mid range (below 5k).

I use normal or individual (PSE and PDDC/sports SPAM on) mode for warming up the car and highway cruising. Sports mode and manual PDK mode (or at least always doing the up shift) for all other driving. I typically hit sport response button when planning to pass quickly. I don't really use sport plus because I prefer to shift PDK manually, PDK shifts uncomfortably rough, and you don't get PSE pops. If I went on a track, I'd probably put it in sports plus and let PDK shift itself, but its not really practical on the streets.

 

Interesting... I thought the peak for the S was 16, if you only get 1 more psi with the powerkit that would be a shame cuz its expensive and adds a little bit of lag. Ive seen folks post they hit 19s with the gts on the regular. Fwiw in my T I only consistently see 13 in sport + but it comes in around 5 grand and can spike to 14+ when you shift (with stock lungs-air filter/exhaust). I also havent been doing king kong downshifts like 2nd at 60+ or 3rd at 90+. Thats where the pdk really shines IMO. Puts you at the edge of the transmission capability for max power on the downshifts and keeps you on boost. Much bigger learning curve with the manual. If i had bigger turbos i would definitely do pdk to squeeze all that power out.

 

I really wish someone would come up with the chip upgrade that doesn't increase the boost but just removes the lag of the boost in the mid revs, which is clearly programmed into the OEM software. Imagine a GTS (or any other model for that matter) hit its max boost from the get go. Even if the boost isn't increased past OEM, you would have significant power increase and oomph, and since youre not going over OEM max boost, it would presumably be safe for the motor. maybe someone already has a product like this available?

 

The main benefit of powerkit is PSI builds to 16 between 3k-5k. 18 at redline isn't that different, but it also gets significantly more HP there. Getting consistent 16 mid range vs progressing to 10 on a base is a huge torque difference. Boosting to 16 PSI early has more lag than progressing to 16 in the S. The base uses less boost so get slightly better response early, though I don't think the S is that significantly different. All of them have rapid response after 3k RPM...the delay is getting to 3k+. GTS/powerkit power delivery is more turbo like and significantly faster including the boost lag. The base boosts quickly and taps out, but GTS is more dynamic and builds with to give a bigger punch.

Way I see if is its a turbo engine and I want more boost. Lag isn't a problem unless you're trying to drop the hammer at 2k RPMs. The way I drive is I'm either in eco mode or not. If you maintain 3k+ RPMs and use sports mode, response is instant in any model. From a stop becomes a consideration (a single time you can't rev at 3k...), but the car is able to get up and go with minimal hesitation (certainly much better than 991.1 PDK, which had some bad hesitation). If you want to pass, you're going to downshift and rev it out moments later. Thus, having more boost is just a plus and I wouldn't care about about any extra lag from low RPMs. I suppose an old school "NA MT" person is probably going to be shifting in and out of low RPMs (or just shifting below 3k in normal driving), so in that case they'd be happier with a less boosted engine...base or T car is perfect for them.

 

Its not software or a chip wont do anything... its just how turbos work. They have to spool up. You can't just spool them up before you start accelerating... they spool as the engine revs.