Techart Springs
Registered User
Joined: Aug 2004
Posts: 6,518
From: Corpus Christi, Texas
Rep Power: 351
There is a lot of confusion about lowering springs since no manufacturer releases info, and no trustworthy source has measured. All rumors. That said, to best of my knowledge and based on many years of following this forum, *ALL* major lowering springs (Techart, GMG, Eibach, H&R) lower the car similarly, about 20mm-24mm. (Anyone correct me as needed pls.)
H&R spring is known to be softer than GMG and Techart, and likely even a touch softer than stock. This has been confirmed with actual measurement by a major and very capable vendor here - I don't mention it often because the measurement was never released for public viewing. Nevertheless, the "same as stock" character has been mentioned by a number of users. I tend to recommend the other 3 springs for this reason as I prefer stiffer springs (personal preference).
Sway bar is a crucial part of suspension tuning (understeer/oversteer behavior), I personally woudn't dismiss it. The sway bar has adjustable settings such that if you don't like the stiffness, you could go to the soft setting. It is true this is strictly personal preference, no right or wrong: if you want softness of stock, then stay with stock. OTOH, if you want to improve the handling, then IMHO it is a must. Because of the adjustability, in general I recommend it highly. Valuable learning tool/education too about handling for us enthusiasts.
Note that regarding the 3 mods you mentioned: lowering springs, DSC module, sway bars, I wouldn't pick any 2 and indicate it to be the "best" as this is again, a matter of opinion/personal preference. Keep in mind they act on TOTALLY different areas of suspension functions (springs, damper, anti-roll) so one can't say a is better than b. (Different, not better.) I got a little carried away
with this discussion, didn't I?
H&R spring is known to be softer than GMG and Techart, and likely even a touch softer than stock. This has been confirmed with actual measurement by a major and very capable vendor here - I don't mention it often because the measurement was never released for public viewing. Nevertheless, the "same as stock" character has been mentioned by a number of users. I tend to recommend the other 3 springs for this reason as I prefer stiffer springs (personal preference).
Sway bar is a crucial part of suspension tuning (understeer/oversteer behavior), I personally woudn't dismiss it. The sway bar has adjustable settings such that if you don't like the stiffness, you could go to the soft setting. It is true this is strictly personal preference, no right or wrong: if you want softness of stock, then stay with stock. OTOH, if you want to improve the handling, then IMHO it is a must. Because of the adjustability, in general I recommend it highly. Valuable learning tool/education too about handling for us enthusiasts.
Note that regarding the 3 mods you mentioned: lowering springs, DSC module, sway bars, I wouldn't pick any 2 and indicate it to be the "best" as this is again, a matter of opinion/personal preference. Keep in mind they act on TOTALLY different areas of suspension functions (springs, damper, anti-roll) so one can't say a is better than b. (Different, not better.) I got a little carried away
with this discussion, didn't I?
Registered User
Joined: Dec 2006
Posts: 3,116
From: Palos Verdes
Rep Power: 256
Welcome to the forum
http://www.tpcracing.com/dsc.html
I agree. I can contribute my H&R figures. How should we measure? ground to top of wheel arches? ground to body directly in front of wheel?
http://www.tpcracing.com/dsc.html
I agree. I can contribute my H&R figures. How should we measure? ground to top of wheel arches? ground to body directly in front of wheel?
How? Takes 5 minutes and I discussed it here:
https://www.6speedonline.com/forums/...ml#post2758673
That said, I am fairly certain of what I posted above, including your H&R springs: *ALL* major lowering springs lower the car 20mm-24mm.
http://www.design911.co.uk/fu/prod54...97-Turbo-20mm/
Last edited by cannga; Apr 10, 2015 at 06:39 PM.
Registered User
Joined: Mar 2015
Posts: 506
From: Apalachin, New York
Rep Power: 40
link
Ty for sharing your link, I now know how to measure the height.
BTW, you folks in southern California, send some sun this way.
3 days in 2015 hit 50+ degrees, Snowed on Easter, just had 10th day straight of rain.
This week Porsche miles totaled 6.
Send that SUN!!
BTW, you folks in southern California, send some sun this way.
3 days in 2015 hit 50+ degrees, Snowed on Easter, just had 10th day straight of rain.
This week Porsche miles totaled 6.
Send that SUN!!
The ONLY way to reliably and accurately measure ride height - is the way that Porsche factory and competent tuners do it: chassis to ground. Don't do fender height, it's not nearly as reliable.
How? Takes 5 minutes and I discussed it here:
https://www.6speedonline.com/forums/...ml#post2758673
That said, I am fairly certain of what I posted above, including your H&R springs: *ALL* major lowering springs lower the car 20mm-24mm.
http://www.design911.co.uk/fu/prod54...97-Turbo-20mm/
How? Takes 5 minutes and I discussed it here:
https://www.6speedonline.com/forums/...ml#post2758673
That said, I am fairly certain of what I posted above, including your H&R springs: *ALL* major lowering springs lower the car 20mm-24mm.
http://www.design911.co.uk/fu/prod54...97-Turbo-20mm/
Registered User
Joined: Aug 2004
Posts: 6,518
From: Corpus Christi, Texas
Rep Power: 351
The ONLY way to reliably and accurately measure ride height - is the way that Porsche factory and competent tuners do it: chassis to ground. Don't do fender height, it's not nearly as reliable.
How? Takes 5 minutes and I discussed it here:
https://www.6speedonline.com/forums/...ml#post2758673
That said, I am fairly certain of what I posted above, including your H&R springs: *ALL* major lowering springs lower the car 20mm-24mm.
http://www.design911.co.uk/fu/prod54...97-Turbo-20mm/
How? Takes 5 minutes and I discussed it here:
https://www.6speedonline.com/forums/...ml#post2758673
That said, I am fairly certain of what I posted above, including your H&R springs: *ALL* major lowering springs lower the car 20mm-24mm.
http://www.design911.co.uk/fu/prod54...97-Turbo-20mm/
Registered User
Joined: Dec 2006
Posts: 3,116
From: Palos Verdes
Rep Power: 256
One is the switch-back right in the neighborhood (the reason for the stiffer suspension), the other the "famous" Southern Cal Poppy Reserve. Actually spring is here and the flowers are already blooming (sorry). It is true we have 350+ days of spectacular sunny blue sky, but unfortunately, lately a drought problem as well. 
Last edited by cannga; Apr 10, 2015 at 08:26 PM.
Thread Starter
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Registered User
Joined: Aug 2013
Posts: 935
From: Maryland
Rep Power: 62
There is a lot of confusion about lowering springs since no manufacturer releases info, and no trustworthy source has measured. All rumors. That said, to best of my knowledge and based on many years of following this forum, *ALL* major lowering springs (Techart, GMG, Eibach, H&R) lower the car similarly, about 20mm-24mm. (Anyone correct me as needed pls.)
H&R spring is known to be softer than GMG and Techart, and likely even a touch softer than stock. This has been confirmed with actual measurement by a major and very capable vendor here - I don't mention it often because the measurement was never released for public viewing. Nevertheless, the "same as stock" character has been mentioned by a number of users. I tend to recommend the other 3 springs for this reason as I prefer stiffer springs (personal preference).
Sway bar is a crucial part of suspension tuning (understeer/oversteer behavior), I personally woudn't dismiss it. The sway bar has adjustable settings such that if you don't like the stiffness, you could go to the soft setting. It is true this is strictly personal preference, no right or wrong: if you want softness of stock, then stay with stock. OTOH, if you want to improve the handling, then IMHO it is a must. Because of the adjustability, in general I recommend it highly. Valuable learning tool/education too about handling for us enthusiasts.
Note that regarding the 3 mods you mentioned: lowering springs, DSC module, sway bars, I wouldn't pick any 2 and indicate it to be the "best" as this is again, a matter of opinion/personal preference. Keep in mind they act on TOTALLY different areas of suspension functions (springs, damper, anti-roll) so one can't say a is better than b. (Different, not better.) I got a little carried away with this discussion, didn't I?
H&R spring is known to be softer than GMG and Techart, and likely even a touch softer than stock. This has been confirmed with actual measurement by a major and very capable vendor here - I don't mention it often because the measurement was never released for public viewing. Nevertheless, the "same as stock" character has been mentioned by a number of users. I tend to recommend the other 3 springs for this reason as I prefer stiffer springs (personal preference).
Sway bar is a crucial part of suspension tuning (understeer/oversteer behavior), I personally woudn't dismiss it. The sway bar has adjustable settings such that if you don't like the stiffness, you could go to the soft setting. It is true this is strictly personal preference, no right or wrong: if you want softness of stock, then stay with stock. OTOH, if you want to improve the handling, then IMHO it is a must. Because of the adjustability, in general I recommend it highly. Valuable learning tool/education too about handling for us enthusiasts.
Note that regarding the 3 mods you mentioned: lowering springs, DSC module, sway bars, I wouldn't pick any 2 and indicate it to be the "best" as this is again, a matter of opinion/personal preference. Keep in mind they act on TOTALLY different areas of suspension functions (springs, damper, anti-roll) so one can't say a is better than b. (Different, not better.) I got a little carried away
with this discussion, didn't I?So that is where DSC came in. But now I am thinking the softer stock spring may be best to stay with and just get DSC and sway for the street.
My biggest gripe is the bounce in the suspension. Apparently DSC fixes this already. So springs may not do anything but lower the car and make it overly harsh.
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Registered User
Joined: Aug 2013
Posts: 935
From: Maryland
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For some the drop is just too much. I rode in a factory turbo back to back with my H&R spring equiped turbo and I'd agree that the ride is better on H&R in every regard. comfort and handling, which is remarkable (disclaimer: mine is a coupe and the stock spring car was a cab). That being said, it's just too low to be a daily driver in NYC.
Are there any other options? Is there maybe some sort of aftermarket/other application spring islotor that will raise the car ~10-15mm? I'm not excited about having to go back to stock.
Are there any other options? Is there maybe some sort of aftermarket/other application spring islotor that will raise the car ~10-15mm? I'm not excited about having to go back to stock.
Every lowering spring is stiffer than stock. I just don't like how low H&R drops the car.
I wish I could drive in a car with GMG springs and sways.
Registered User
Joined: Mar 2015
Posts: 506
From: Apalachin, New York
Rep Power: 40
What does DSC mean?
My car when launching, since engine mods and Evoms Stage IV Tune has developed some wheel hop.
See attached video of inside the car during launch, you can almost feel the tire hop.
Take note you Southern California people, we got a heat wave today, check out the outside temp on speedo, a blazing 44 degrees, YIPPIE!!!
My car when launching, since engine mods and Evoms Stage IV Tune has developed some wheel hop.
See attached video of inside the car during launch, you can almost feel the tire hop.
Take note you Southern California people, we got a heat wave today, check out the outside temp on speedo, a blazing 44 degrees, YIPPIE!!!
Last edited by Fieldsport; Apr 11, 2015 at 12:04 PM.
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Registered User
Joined: Aug 2013
Posts: 935
From: Maryland
Rep Power: 62
What does DSC mean?
My car when launching, since engine mods and Evoms Stage IV Tune has developed some wheel hop.
See attached video of inside the car during launch, you can almost feel the tire hop.
Porsche Evoms stage IV 5K Launch - YouTube
Take note you Southern California people, we got a heat wave today, check out the outside temp on speedo, a blazing 44 degrees, YIPPIE!!!
My car when launching, since engine mods and Evoms Stage IV Tune has developed some wheel hop.
See attached video of inside the car during launch, you can almost feel the tire hop.
Porsche Evoms stage IV 5K Launch - YouTube
Take note you Southern California people, we got a heat wave today, check out the outside temp on speedo, a blazing 44 degrees, YIPPIE!!!
It is a very very popular mod and takes 5 minutes to swap out the modules.
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Joined: Jan 2015
Posts: 229
From: NYC
Rep Power: 28
driver f: 25 1/4" pass f: 25 1/2"
driver r: 26 1/2" pass r: 26 3/4"
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