S/T Suspension Programming - GT3 update??
07-28-2024, 11:46 PM
#136
Rennlist Member
Thread Starter
Working on this already . . . will advise when (if) we get it working. Not sure if the GT3 shocks will work with the RS software though - the RS has different shocks than the GT3, so might not work. Good news is the steering column switch unit is the same between the GT3 and GT3RS, so the RS wheel should talk to the ECUs - the chassis controller PN is the same as well, so we probably can get the software loaded. If will be a question if some other RS system conflicts with the normal GT3 systems IE if it needs some input from the active aero, which the GT3 obviously won't have. We shall see!! I agree - this would be very cool - I've ordered up a steering wheel switches and some smaller parts to build an RS wheel, and then will work with @rnlst_log to see if we can crack this nut as well . . . I'm also keeping an eye out for a used set of RS shocks just in case those are required.
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usctrojanGT3 (07-29-2024)
07-29-2024, 01:22 AM
#138
07-29-2024, 01:34 AM
#139
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Thread Starter
I hope they so something more than the current S/T programming as we already have that . . . let's hope for even better tuning!!
07-29-2024, 08:53 AM
#141
Hi - no errors - seems to work perfectly. I'm currently traveling, so haven't driving it since the first few drives. Overall, a noticeable improvement with PASM in normal mode, which is my standard driving mode. I normally drive in Sport or Track mode, with PASM sent to Normal - in this mode, the dampening seems quite a bit more compliant. I did drive with PASM in Sport mode, but honestly I haven't driven enough in that mode to be able to tell a difference. It's noticeably stiffer w/ PASM in Sport mode (as before), but I can't really opine on the differences in the ST tune in sport mode.
I'm anxious for a few others to try this out so we can get more feedback - we are 100% running the exact same code as loaded on new S/Ts, so should behave exactly the same - we didn't change any steering behavior or braking - there is different code for steering as the S/T lacks RAS, so we kept the steering code standard GT3, which I think is very good - not sure if I would change the steering feeling in anyway.
I'm discussing with Mars implementing the RS suspension controls - this also should be doable as it appears to have same electronics, just addition of the steering wheel controls, and different code. However, I'm pretty happy with just the S/T dampening - if I were looking to track my GT3 more, I'd be much more interested in the RS tunability - which I think we can do.
I'm anxious for a few others to try this out so we can get more feedback - we are 100% running the exact same code as loaded on new S/Ts, so should behave exactly the same - we didn't change any steering behavior or braking - there is different code for steering as the S/T lacks RAS, so we kept the steering code standard GT3, which I think is very good - not sure if I would change the steering feeling in anyway.
I'm discussing with Mars implementing the RS suspension controls - this also should be doable as it appears to have same electronics, just addition of the steering wheel controls, and different code. However, I'm pretty happy with just the S/T dampening - if I were looking to track my GT3 more, I'd be much more interested in the RS tunability - which I think we can do.
07-29-2024, 01:39 PM
#142
Rennlist Member
Interested if @rnlst_log manages to investigate the compatibility of the Speedster profile for us 991 Touring owners in time!
Thanks
07-29-2024, 02:38 PM
#143
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Thread Starter
As far as I know, the S/T has a PASM switch (switch on dash with shock absorber logo right next to FAL) just like the GT3, and thus has normal and sport mode to dampening . . .
The following 3 users liked this post by f4bones:
07-29-2024, 03:35 PM
#144
Burning Brakes
07-29-2024, 07:38 PM
#146
Any SF Bay Area folk who are interested in getting the recode done, please ping me. So far I have three or four and we're trying to arrange a shop and time that will work for us and @rnlst_log .
@f4bones / @dixonk I was driving yesterday and was trying to think if there's a way to objectively test the change in "feel". I have a decent drive figured out (it's around a dam and has a mix of smooth and bumpy surfaces on straights and curves) and wondered if I drive it before and after with maybe a camera attached to the passenger seat and/or recording the G monitor, if that might give some insight. I'm not sure it's possible as much of the feedback is through the wheel but I think I'll give it a go.
@f4bones / @dixonk I was driving yesterday and was trying to think if there's a way to objectively test the change in "feel". I have a decent drive figured out (it's around a dam and has a mix of smooth and bumpy surfaces on straights and curves) and wondered if I drive it before and after with maybe a camera attached to the passenger seat and/or recording the G monitor, if that might give some insight. I'm not sure it's possible as much of the feedback is through the wheel but I think I'll give it a go.
Last edited by cyn; 07-29-2024 at 07:47 PM.
07-29-2024, 07:49 PM
#147
Rennlist Member
Any SF Bay Area folk who are interested in getting the recode done, please ping me. So far I have three or four and we're trying to
@f4bones / @dixonk I was driving yesterday and was trying to think if there's a way to objectively test the change in "feel". I have a decent drive figured out (it's around a dam and has a mix of smooth and bumpy surfaces on straights and curves) and wondered if I drive it before and after with maybe a camera attached to the passenger seat and/or recording the G monitor, if that might give some insight. I'm not sure it's possible as much of the feedback is through the wheel but I think I'll give it a go.
@f4bones / @dixonk I was driving yesterday and was trying to think if there's a way to objectively test the change in "feel". I have a decent drive figured out (it's around a dam and has a mix of smooth and bumpy surfaces on straights and curves) and wondered if I drive it before and after with maybe a camera attached to the passenger seat and/or recording the G monitor, if that might give some insight. I'm not sure it's possible as much of the feedback is through the wheel but I think I'll give it a go.
07-29-2024, 07:59 PM
#148
I live in Oklahoma. Our roads in a lot of places are about as smooth as the roads in Mogadishu. I will be able to tell a difference before leaving my neighborhood. First I will need to set my front sway bar back to the mid setting. The softer setting had a positive impact on harshness but it was at a cost of steering feel. I prefer the edginess of stock settings.
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speed77 (07-29-2024)
07-29-2024, 08:13 PM
#149
Rennlist Member
Hmm.. interesting. Good feedback. I find the stock settings too edgey.. it's a sort of skittish feel where I find that if the tarmac is smooth, it's great and highly accurate. But for most "standard" back roads, the car just feels "nervous" and tends to jit into ditches and if there are any long cracks in the direction of travel it feels very rail roaded. But I guess I'll have to wait and see. I will be getting the flash done soon enough and will report back
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07-29-2024, 08:21 PM
#150
Thanks for the comments. Took a long drive today from Alpine Wyoming to Driggs Idaho, and then home through Jackson Hole - the results are nothing short of amazing. Now I know what all the S/T reviewers were raving about - it really does dramatically improve the manors of the car on less than perfect roads. I couldn't be more pleased with the results. I have to say this is the car Porsche should have built - PDK, extra 40 lbs of sound deadening, 4.5L NA engine, and S/T dampening. . . transformed an amazing car to a simply magical driving experience. I honestly believe every 992 GT3 owner will benefit from this mod - I'm sure @rnlst_log is going to be very busy!
I remember well the track at Gillespie Field - was quite an icon for many years. Really a shame it closed down. I flew fighters in the USAF = just fly for fun now, although we do some contract flying in my F-5s for the military, so good way to keep my "dull" fighter pilot skills at least someone relevant!
I remember well the track at Gillespie Field - was quite an icon for many years. Really a shame it closed down. I flew fighters in the USAF = just fly for fun now, although we do some contract flying in my F-5s for the military, so good way to keep my "dull" fighter pilot skills at least someone relevant!