Hello,

Thought you all might like to see this. We finally were able to get our hands on a 992.2 "S" recently and run it on the dyno for R&D and tuning. But I wanted to share the stock vs. stock graphs for you all. This is comparing the 992.2 Base and the 992.2 S. These two cars were both done on our Mainline ProHub dyno in South Florida. Now, these cars were done about 3 weeks apart or so, but the weather and DA were just about the same. Mid 90's with full Florida humidity and a DA of a 2000ft. Both cars are also bone stock with no mods or exhaust etc. running on just 93 pump gas.

It's neat to see how these cars differ so much in final power output, despite being mechanically identical on the engine side. The only change is the software from the factory.



Another glance here is using M-Tuner to log the Stage 0 mapping (this log happens to be the "S"), if you notice the lambda it is hitting lambda of 1 at WOT. You will also see the car has some small knock events as well, even on the stock mapping with pump gas. A lot of this knock will go away when you richen the lambda target and make some other changes as well. A big part of our tuning strategy when building from scratch is to tune for engine safety first, and then power comes second. It's great to get this empirical data from a completely stock baseline to see what we can efficiently and effectively change. Porsche's tuning strategy does some pretty unique things to be able to make this kind of power but running at such a lean lambda target without causing engine damage. This also means the motors are often quite overbuilt, and it gives us a pretty big playground to mess around in as we have tons of headroom. It will be quite interesting to see what this all looks like on the new T-Hybrid GTS running lambda of 1 and the new turbochargers kicking in much sooner. The management of torque will be interesting to investigate and build upon.




Cheers,

-Charles@M

Thanks for sharing, so we should expect similar figures on the 992.2 C2S tune as the C2? The lambda 1 really has these guys running at the edge, huh...

Any progress on the OBD2/Port tune for the 992.2s?

It looks like the torque curve on the stock S is quite a bit flatter than the stock Base, interesting. Always appreciate the updates Charles

It is so interesting to see what software can do to nearly identical cars.

Yes, the tuned "S" makes the same final power as a tuned "Base". The Base model obviously just has a more dramatic before/after delta.

We are working on OBD flashing and have been testing it internally. Right now, this ECU still requires an initial bench unlock before OBD becomes doable. Who knows though, it's possible more computer nerding can allow us to bypass the bench unlock completely one day, but that is still very much TBD.

Right!? Smart on the manufacturer's end, they only have to produce a single engine but can differentiate different trims with software on the power side of things.

Most welcome!

-Charles@M

I can’t wait to see what you guys can do with the 992.2 GTS. I have your tune on my 992.1 T, and it transforms the car. Have a GTS coming in January. Thanks for your hard work to make these cars even better.

So the Porsche marketing about the 992.2 S having new turbochargers was B.S.?



https://newsroom.porsche.com/en/2025/products/porsche-911-carrera-s-and-cabriolet-38315.html

My self control will likely evaporate when/if you develop an OBD flash tune for the 992.2 lol. Currently I'm planning on keeping mine stock until Spring at least...

Interestimg thread. So, the .2S is just a different tuned base or not (like .1 GTS was a tuned .1S)? What else is different on the .2S, if any, compared to the .2Base? Otherwise, it sounds almost if you plan to tune one day anyway, why spend .2S money if all else is the same?

Very informative. Thank you, M-Engineering.

Yes, but it definitely begs the question...does the stock S come with enough additional equipment standard to justify the price increase as opposed to simply optioning out a base or a T and then just adding the M-Engineering secret sauce? It seems to kind of defeat the point of buying an S vs. a base or a T.

kinda interesting how the "S" makes about 540 hp when it is advertised to be about 480. sometimes it blows my mind to see how they under rate these cars in HP numbers. but im happy to see that the S actually makes over 500 hp stock

If I read the graph properly, the measurements are at the wheel. On the base, the results look very close to the advertised numbers from Porsche for gross hp/torque. With an assumed 15% driveline loss, would yield 435 hp and 388 lb-ft at the crank. Is that reasonable?

It’s an interesting consideration. Compared to the base, the S adds an e-diff, bigger brakes, lowered suspension with different dampers, sports exhaust as standard and some options you can’t get on a base + the hp increase is under warranty. How much all of that is important is up to you and it’s great to have the option to increase hp either way.