997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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Best way to kill understeer?

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Old 05-13-2011, 09:25 AM
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Best way to kill understeer?

Curious what set-up is best suited to get rid of the all wheel drive understeer problem with 997TT's?

Recently I upgraded to to Bilstein Damptronics (SS10's) which have had a tremendous positive affect, however still not entirely satisfied.

Front & rear sway bars with drop links? Other recommendations?
Possible alignment setups?
 
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Old 05-13-2011, 09:43 AM
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I don't know if there's 'best way' to get rid of understeer. It more of a gradual approach to see what works for you in specific driving application.

In general things to try, from my 'archives' . . .

Higher front tire pressure
Lower rear tire pressure
Larger front tire section
Smaller rear tire section
More negative front camber
More positive rear camber
Softer front springs
Stiffer rear springs
Thinner (weaker) front sway bar
Thicker (stronger) rear sway bar
Weight distribution more rearward
 
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Old 05-13-2011, 09:43 AM
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Rear Gt2 sway bar, bolts up easily in about 30", OEM quality ( approx $200).
 
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Old 05-13-2011, 10:07 AM
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As Gasman said, the rear GT2 sway can help because of it's adjustability...

Here is a link to our website with more details:
http://www.suncoastparts.com/product//GT2RSB.html

Let me know if there is anything else we can help you out with.
 
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Old 05-13-2011, 10:27 AM
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Listen to Doug ,best 200+ you ever spend on your car , you don't need to change factory sway bar in front
If you looking for better steering response in front- install adjustable front drop links that are connect to the hub carrier.
 
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Old 05-13-2011, 10:51 AM
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Looks like it may have gone up in price a bit, still better than the aftermarket alternatives IMO.
 
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Old 05-13-2011, 11:07 AM
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Old 05-13-2011, 03:16 PM
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Slow down on the way in.
 
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Old 05-13-2011, 03:35 PM
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Originally Posted by Z06...
Slow down on the way in.
And careful with the throttle on the way out.

Ken
 
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Old 05-13-2011, 03:45 PM
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Rear GT2 sway bar huh. Easy to install from the sounds of it?
 
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Old 05-13-2011, 03:46 PM
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More negative front camber, stiffer rear sway bar.
 
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Old 05-13-2011, 03:46 PM
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Originally Posted by M32911S
Rear GT2 sway bar huh. Easy to install from the sounds of it?
15 minutes. Straight swap.
 
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Old 05-13-2011, 07:32 PM
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gt2 rear bar
gt3 LCAs ( more neg camber)
adj rear toe links
stock suspension otherwise
 
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Old 05-13-2011, 07:35 PM
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Originally Posted by bbywu
More negative front camber, stiffer rear sway bar.
+1. Its amazing what a decent alignment can do.
Also the best solution is a few driving courses at your Porsche advanced driving school to give you a better undertstanding how the 911 car is driven correctly through corners. Without that all the mods in the world are pretty pointless as you'll only increase your chances of writing yourself off.
 
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Old 05-14-2011, 08:59 AM
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Originally Posted by speed21
+1. Its amazing what a decent alignment can do.
Also the best solution is a few driving courses at your Porsche advanced driving school to give you a better undertstanding how the 911 car is driven correctly through corners. Without that all the mods in the world are pretty pointless as you'll only increase your chances of writing yourself off.
Regular at the Proformance racing school (here in the North West) - about 2 per year. Haven't attended a Porsche sanctioned event yet..

Originally Posted by bbywu
15 minutes. Straight swap.
Thanks guys! Was thinking of front and rear, but will prob just approach the rear for now. As for rear drop links? Not necessary?
 


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