DSC V3 suspension feels soft/floaty at high speeds
01-27-2022 | 07:05 PM
#16
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From: Jessup, MD
Hello, fellow DSC users,
I've had the DSC V3 for a while now on my 991.2 and overall I've been happy with the ride quality, however I have been in a few situations where the suspension felt way too "floaty" at high speeds. One of the places I test 1/4 mile runs at has a dip at the very end and when I go through that doing 150+, the suspension would bounce around 3-4 times before settling. That feels really sketchy at those speeds. I do the 1/4 mile runs with the suspension in comfort mode, so the car can squat more and I don't feel like trying to engage PDCC mid run.
Is this normal behavior for the DSC V3, or mine is just not set up properly? I haven't really touched it after it came, I had it installed directly. I'm assuming it came with the GT3 tune loaded up. Looking at some YouTube videos, I saw there's an option to increase stiffness at certain speeds, but before I go down that road I want to make sure this is the expected behavior.
I've had the DSC V3 for a while now on my 991.2 and overall I've been happy with the ride quality, however I have been in a few situations where the suspension felt way too "floaty" at high speeds. One of the places I test 1/4 mile runs at has a dip at the very end and when I go through that doing 150+, the suspension would bounce around 3-4 times before settling. That feels really sketchy at those speeds. I do the 1/4 mile runs with the suspension in comfort mode, so the car can squat more and I don't feel like trying to engage PDCC mid run.
Is this normal behavior for the DSC V3, or mine is just not set up properly? I haven't really touched it after it came, I had it installed directly. I'm assuming it came with the GT3 tune loaded up. Looking at some YouTube videos, I saw there's an option to increase stiffness at certain speeds, but before I go down that road I want to make sure this is the expected behavior.
Second, try to make your 1/4 miles run in DSC Sport mode(that is suspension Sport mode, not engine Sport or Sport Plus mode) since it has firmer damping. Use DSC Launch Control so you can still control squat during launch.
Third, if you find that you still prefer DSC Normal mode you use and for launching then you could try adding more % to the vehicle speed table and/or add high/med speed rebound to whichever end of the car(front or rear) that you feel needs it.
All resources for custom tuning is on DSC website Support Video page- https://www.dscsport.com/support-vid...-42f1bfba-a2b7
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2023 Porsche Sprint Challenge 992 Cup Am Champion
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PCA National Instructor
TPC Racing stats:
2023 Porsche Sprint Challenge 992 Cup Am Champion
2023 Porsche Sprint Challenge GT4 Pro-Am Team Champion
2022 Porsche Sprint Challenge 992 Cup & 991 Cup Champion
2020 IMSA GT3 Cup Challenge 2nd Championship
2018 IMSA GT3 Cup Challenge 2nd Championship
2016 IMSA GT3 Cup Challenge Champion
2013 IMSA GT3 Cup Challenge Champion
2006 Rolex-24 @ Daytona GT Champion
2004 Grand-Am SGS Class Champion
01-27-2022 | 07:15 PM
#17
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From: Jessup, MD
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ottodawg (01-27-2022)
01-27-2022 | 07:20 PM
#18
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From: Colorado
Just for clarification, these calibration files for the DSC controller are named "GT3 Tour" and "RS", the actual calibrations have nothing to do with the car models that are similarly named. The "Tour" file was named as such because of the supple riding Normal mode, while the new "RS" file has a different strategy by using less Shock Cal and more Velocity to arrive at the same calibrated value. Both file names are appealing.
.
Last edited by ottodawg; 01-27-2022 at 07:21 PM.
01-28-2022 | 06:13 AM
#19
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From: Sofia, Bulgaria
Did you buy it new? Reason I ask, if used someone my have changed the map. I found the Turbo map pretty floaty in general. Haven't noticed it as much with the GT3 Touring map, but also don't really run at those speeds often. Might try re-installing the map, maybe something got changed/corrupted.. I'd hit up @Tom@TPC Racing , he knows all things DSC.
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Brian Himmelman (01-22-2024)
01-28-2022 | 01:05 PM
#22
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From: Colorado
01-28-2022 | 05:57 PM
#23
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From: Wellington, FL
Yep...
I see Otto posted a link to the video. Highly recommend you do that - it made a noticeable difference/improvement in feel after I lowered my car with Eibachs.
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Tom@TPC Racing (01-28-2022)
01-28-2022 | 10:17 PM
#24
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Hey Tom, regarding your launch control feature/function. I stage in my launch stance, and I typically turn off PASM. You're saying the ideal way is to leave PASM on, noted. Now, to activate DSC's launch mode, you hold hard brake and then quickly tap the throttle and release (Wide Open Throttle). I do this, and I get my "Launch Control Activated" message on my screen... Now it's ready to go correct? What are the parameters for DSC module to stay in it's own launch mode? Is there a timer where it expires? Like 5-10 seconds or so? Is the car allowed to move or not? If the car moves, do you have to repeat the sequence? What cancels the modules own launch mode? What keeps it activated?
As for PSM AKA Traction Control. Is that up to the user or is PSM off or PSM Sport suggested?
As for PSM AKA Traction Control. Is that up to the user or is PSM off or PSM Sport suggested?
01-29-2022 | 07:46 PM
#25
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From: FL
Thanks to everyone who chimed in with helpful info and especially the OP for starting this thread, I am happy to say I was able to get the suspension dialed in!
(don't want to hijack this thread) so quick recap, I was having kind of similar affects as the OP was stating and a "bounciness" to the suspension at highway speeds whenever there was a dip or an uneven bridge, and now its completely gone after 0'ing the ride height and installing the "tour" file.
I originally bought the DSC V3 second hand off a fellow RL member and just plugged it in and only noticed marginal difference but now it feels completely flat and stable but also smooth as butter. Amazing.
(don't want to hijack this thread) so quick recap, I was having kind of similar affects as the OP was stating and a "bounciness" to the suspension at highway speeds whenever there was a dip or an uneven bridge, and now its completely gone after 0'ing the ride height and installing the "tour" file.
I originally bought the DSC V3 second hand off a fellow RL member and just plugged it in and only noticed marginal difference but now it feels completely flat and stable but also smooth as butter. Amazing.
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Nikolov (01-30-2022)
01-30-2022 | 08:12 AM
#26
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From: Sofia, Bulgaria
I also want to confirm that my issue was resolved by resetting the ride height sensors and flashing the GT3 Tour file. The car has transformed.
It rides even more comfortable in normal mode (didn’t think that was possible) and there is a noticeable difference now in sport/sport+. The bouncy/floaty feeling is gone even in normal mode.
I feel dumb now, having driven the car with improper settings for 6 months 😄
It rides even more comfortable in normal mode (didn’t think that was possible) and there is a noticeable difference now in sport/sport+. The bouncy/floaty feeling is gone even in normal mode.
I feel dumb now, having driven the car with improper settings for 6 months 😄
01-30-2022 | 10:19 AM
#27
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From: Colorado
Hey Tom, regarding your launch control feature/function. I stage in my launch stance, and I typically turn off PASM. You're saying the ideal way is to leave PASM on, noted. Now, to activate DSC's launch mode, you hold hard brake and then quickly tap the throttle and release (Wide Open Throttle). I do this, and I get my "Launch Control Activated" message on my screen... Now it's ready to go correct? What are the parameters for DSC module to stay in it's own launch mode? Is there a timer where it expires? Like 5-10 seconds or so? Is the car allowed to move or not? If the car moves, do you have to repeat the sequence? What cancels the modules own launch mode? What keeps it activated?
As for PSM AKA Traction Control. Is that up to the user or is PSM off or PSM Sport suggested?
As for PSM AKA Traction Control. Is that up to the user or is PSM off or PSM Sport suggested?
.
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rbrotmd (07-06-2022)
07-05-2022 | 06:55 PM
#28
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Hi! I ordered such springs - Eibach, as you have for your 991.1 T. Tell me how the car rides in this configuration compared to the drain? And how much does the DSC unit on understated springs make the ride even cooler ? I want to bring the ride closer to GT3
07-06-2022 | 03:51 AM
#29
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From: US
@Tom@TPC Racing
Sent a direct email to you as well with more detail, but I was feeling like something wasn't quite right lately with my suspension setup and DSC controller. Stock springs, stock shocks, tour file. I did a reset ride height as well just for good measure, but both before and after I was able to read a few errors with the record function.
Specifically (and just listing errors)
Any insight as to what these errors mean and are they significant?
Thanks...
Sent a direct email to you as well with more detail, but I was feeling like something wasn't quite right lately with my suspension setup and DSC controller. Stock springs, stock shocks, tour file. I did a reset ride height as well just for good measure, but both before and after I was able to read a few errors with the record function.
Specifically (and just listing errors)
02 Sensor ref voltage 1
13 CAN ID 134 missing 1
14 CAN ID 261 missing 1
15 CAN ID 259 missing 1
16 CAN ID 257 missing 1
17 CAN ID 287-262 missing 1
13 CAN ID 134 missing 1
14 CAN ID 261 missing 1
15 CAN ID 259 missing 1
16 CAN ID 257 missing 1
17 CAN ID 287-262 missing 1
Thanks...
07-06-2022 | 10:20 AM
#30
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From: Jessup, MD
@Tom@TPC Racing
Sent a direct email to you as well with more detail, but I was feeling like something wasn't quite right lately with my suspension setup and DSC controller. Stock springs, stock shocks, tour file. I did a reset ride height as well just for good measure, but both before and after I was able to read a few errors with the record function.
Specifically (and just listing errors)
Any insight as to what these errors mean and are they significant?
Thanks...
Sent a direct email to you as well with more detail, but I was feeling like something wasn't quite right lately with my suspension setup and DSC controller. Stock springs, stock shocks, tour file. I did a reset ride height as well just for good measure, but both before and after I was able to read a few errors with the record function.
Specifically (and just listing errors)
Any insight as to what these errors mean and are they significant?
Thanks...
If there's a failure of any item in the system the entire system will become full hard as a failure protocol, which is the same failure protocol as the factory PASM system. A softer ride would be the exact opposite of the failure protocol.
Could be that the shocks are wearing/aging(not a failure, just putting out less damping force, like how an engine can make less power but still runs fine). If that is the case you can use the DSC Tuner Software to turn up the Default Rate by something like 5% to compensate. This would be the same approach for aging mechanical-adjustable shocks(i.e. After x number miles of usage shocks become softer so turn up the dial by a click or two. Or replace, or rebuild if applicable).
The faults you have posted was probably read with ignition off/engine off so there's no power to CAN and no voltage.
Hope this helps.