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i tested the default setting theory way back when this first started. errors occurred for all settings except the original but the feeling of the steering is very different and in GT3 mode it was much more like what i wanted. that's why i kept it and suppressed the error.
But were all the other models you tried actually in production at the same time your car would have been built?
I'm just saying the setting can't be from the future (PIWIS isn't a time machine) unless 1) they already had the GT3 calibration when our cars were built or 2) someone updated whatever is stored in the module after the GT3 calibration was available.
Again, just a theory but trying to think through what logical scenarios might exist
Update: just re read your post so they all had errors but they all felt different from each other as well? Hmm ok that's an interesting data point.
My car has a December 2011 build date, this was long before the GT3 was released so I wonder how it could have the GT3 calibration on the module? (Even if the GT3 were in development then they probably wouldn't have had the calibration ready for production steering racks.) Thus the error code as someone mentioned above.
So what we're likely feeling (in this case) as the difference is probably a change to a default non-modified calibration that the manufacturer of the steering rack sets.
That'd also explain why later cars do have the GT3 setting.
Also I think the options shown in the coding screen are PIWIS version dependent maybe?
I am assuming all these settings gets pushed into the ECU when the dealer perform a software upgrade. These option shows up with a ThinkDiag and some other non-PIWIS diag tool.
I have a base C2 with a 5/15 build date, and I recently made the switch to the GT3 steering setting using my PIWIS II. The process went smoothly—no errors, messages, or warnings during or after the change. It's interesting to see how others describe this mod as transformative. I'd categorize the difference as noticeable yet subtle. At lower, parking lot speeds, the steering feels lighter, which is definitely a welcome improvement. On the highway, the on-center steering is also lighter and though I wouldn't say that it tramlines, the wheel does seem to deflect slightly over uneven surfaces.
In terms of PASM, I think I can feel a change here as well. Before the change to GT3, the contrast between PASM off and on was quite pronounced. Post-GT3 setting, the difference feels less distinct. For now, I'm going to keep it set to GT3 and see how it performs on a variety of drives. I think this aligns to other's experience...
You guys with the error should find a friendly dealer that will update the firmware on the power steering module, then you will get the GT3 map.
The “maps” live on the module on the car, the PIWIS/ThinkDiag etc just toggle settings based on software on the device. The error is the power steering module saying “no map found” essentially
On the 992 GT forum there are guys updating the firmware on their PASM modules so they can code the S/T setting… same story
This is intuitive to me, that the electronics in the steering rack itself hold the calibration settings for the different models, and the PIWIS just tells the ECU when talking to the steering rack, which to apply. So even for cars built prior to the GT3 launch, they probably had a saved setting for a GT3 knowing a GT3 would be coming even if that setting is "blank" in the early cars showing the error. We did see some blanks in the dropdown menu too as shown in the screenshots. I wonder if anyone had tried selecting those? Maybe I will.
I'll check out the 992 GT forum to read about how they're doing the firmware update. That might be the ticket!
@nhnguy12 totally your call but depending on what we learn through this process it might be worth putting a little caveat on the part of your instructions about disabling the steering warning?
Actually maybe @rnlst_log might have some insight on what is going on given his knowledge of the overall software/modules/coding of the 911 platform. I know his attention is mostly on the 992s in the other thread, but maybe he has a sense of what is going on with the early 991.1 cars and the Steering error shown on the dashboards when selecting the GT3 calibration.
I've noticed a bunch of weirdness in my car (see post #254 and after) when driving around with the GT3 steering config and the error showing on the dash. So maybe there is a need for a flash update on the actually steering rack somehow since these cars were built before the GT3 was released?
But were all the other models you tried actually in production at the same time your car would have been built?
I'm just saying the setting can't be from the future (PIWIS isn't a time machine) unless 1) they already had the GT3 calibration when our cars were built or 2) someone updated whatever is stored in the module after the GT3 calibration was available.
Again, just a theory but trying to think through what logical scenarios might exist
Update: just re read your post so they all had errors but they all felt different from each other as well? Hmm ok that's an interesting data point.
yes, they felt different. i'm not sure but i don't think the PIWIS is putting values into the steering control module. i believe it's just flipping the switch on the existing settings within it.
My car has a December 2011 build date, this was long before the GT3 was released so I wonder how it could have the GT3 calibration on the module? (Even if the GT3 were in development then they probably wouldn't have had the calibration ready for production steering racks.) Thus the error code as someone mentioned above.
So what we're likely feeling (in this case) as the difference is probably a change to a default non-modified calibration that the manufacturer of the steering rack sets.
That'd also explain why later cars do have the GT3 setting.
Also I think the options shown in the coding screen are PIWIS version dependent maybe?
Hi vincenz0, I have car without pasm and I did the mod as well. My car has a production date of June 27, 2013. When I changed the setting I'm pretty certain nothing else changed with the car. I would have noticed if any of those 6 things you mentioned changed with my car after. If you are wondering if your car is going into some default setting because of its early build we should get our cars together and just try them back to back. I live somewhat close by so send me a DM if you are interested.
09-14-2024 | 02:10 PM
