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RSB and Oversteer....

VWTURBOFAM

Ready to race!
Location
TEXAS
Anyone with Rear Sway Bars getting a little too much oversteer? I have the NeuSpeed RSB on my 2016 GTI/PP and have noticed that when i take the turns in the car now, it rotates a lot more. I know that sounds like a blast to most people, but I guess I'm just not used to it, cuz it's a little scary taking fast turns now lol. I have had oversteer in RWD before and that was fun, but when i get it in a torquey FWD...it freeks me the hell out. LOL

It's not as bad when I have Steering in Sport(heavy) , but when it's on Normal (light), good grief, I end up having to counter at the last minute to prevent from oversteering into a wall or on coming lane.
 

Yomny1

Ready to race!
Location
S Florida
Cant comment on having too much oversteer via swaybar but I know decreasing the XDS setting through VCDS will help with your case. It will increase understeer by reducing this rotating effect.

In your case I think turning it completely off will get your the desired outcome. I've played with all the settings enough.
 

dr_mat

Go Kart Champion
Location
Berkshire
This is the trade off. More body control on the track, less forgiveness on uneven surfaces (i.e. roads).
 

napadirt

Ready to race!
Location
SF Bay Area
Car(s)
MK7 2DR PP MT, Macan
I am running the most extreme setup offered by Nusupeed with their stiffest "Race" rear sway bar and otherwise stock suspension. I found the stock suspension and All Season to have a very unsatisfying (but safe) understeering characteristic. It's a very conservative setup by VAG. The MK7 received some criticism for this. A rear sway and Michelin PSS corrected this and then some transforming the car into quite the fun nimble FWD chassis.

To me this setup has perfect balance. The chassis responds quickly and predictably to small steering inputs. Once on the correct line little to no steering input is required to apex. You can make the car tail happy if you turn in with too much weight over the front wheels (and too little weight over the rear wheels). This is the mistake inexperienced drivers are likely to make. Low moment chassis rear/mid engine cars are very unforgiving in this regard. By comparison I feel invincible in my GTI.

I can make use of this to rotate the car through slow speed corners. I can control the line with throttle. The eLSD probably helps here. There is a nice presentation from BorgWarner demonstrating the yaw dampening properties of the GTI eLSD. Another advantage is it allows you to accelerate out of corners early without inducing throttle-on understeer on corner exit.

If I had a scary moment of the rear unpredictably braking loose on a steady state high speed corner I would remove it and say it's too stiff, unsafe, and remove it. If there is one instance I think it might have trouble it would be in high speed transitions, e.g. chicane. However I think this could be controllable with the eLSD using the right technique.

Some disclaimer is in order. I have an open wheel racing background. Not saying this just to brag. Just pointing out I have the training and experience to control a car which can be less forgiving then one setup to understeer which is generally safer for the average driver.

Edit: disclaimer 2, I am running the stock springs/dampers. If you install lowering spring this could make the rear sway prone to snap oversteer over bumpy surfaces when the tires momentarily lose contact with the road. I have not found any need to lower the car. I think I have the right comprimise between cornering sharpness and ride comfort. I drive on a lot of terrible roads. Even though we have some of the highest taxes in the US, Calfironia can't afford to fix roads!

I do plan to go to coilovers someday. When I do this big sway bar may need to come out.
 
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0bLiViOuS

Go Kart Champion
Location
Orange County
Nice info Napa. I'm going to eventually throw on a RSB on and probably run PSS as well so it's good to know you like the setup. I've thrown a RSB on every FWD car I've owned to make them more neutral.

I think Napa is correct in saying a lot of the oversteer could be due to the weight transfer. Maybe you can adjust some of the pre-load which might make it feel more stable and less tail happy? I'm not sure how your setup the Neuspeed bar, but it has two mounting points for different pre-load, so maybe you can reduce it if it's on the stiffer setting?
 

Yomny1

Ready to race!
Location
S Florida
This just puts a rush on what I already had planned, ordering my RSB. :) Great piece of info, I was starting to think the GTI was going to be an understeering pusher all the time.
 

VWTURBOFAM

Ready to race!
Location
TEXAS
So my set up is GTI w/PP, on Pilot SS 18's 235, VW racing springs, Neuspeed 25, with Neuspeed endlinks.

Yea, I guess I need to adapt to how the car rotates now. Coming from a Evox and Speed3 which both understeer pretty bad, it will take some time to get the steering down.
 

Mk7VW

Banned
Location
Somewhere, USA
I have the 25mm rear anti roll bar and it seems to be evenly stable. I wish I got the 27mm for more over steer... maybe my all season tires are just putting the car to shame.
 

napadirt

Ready to race!
Location
SF Bay Area
Car(s)
MK7 2DR PP MT, Macan
VWTURBOFAM: you'll adapt to the way it handles. After I installed the sway bar I found myself nearly driving into curbs because a lot less steering input was required. I had to adapt. Now that I have it's my favorite mod to date. Even more than the intoxicating power of stage 2.

Oblivious: yes you got my point and seem to know the importance of weight transfer. The rear race bar only has one mounting point.
 

Ferrari

Ready to race!
Location
Mississauga, ON
I to have a PP GTI and a Neuspeed 25mm rear sway bar. I get power-on oversteer quite frequently, especially in snow on decreasing-radius corners. I'm guessing it's partly due to the diff that transfers torque to the outside wheel, thus inducing a moment in the chassis.
 

VWTURBOFAM

Ready to race!
Location
TEXAS
@napadirt & Ferrari: You both described exactly what I was trying to say in my opening post.

I do feel like I'm giving it too much input when steering in corners.
I also do get power-on oversteer.

Don't get me wrong I love the way it drives, it's just I wasn't sure if I was causing the issue or the car setup was the problem. Guilty me!
Now I can honestly say I know y most cars are set up to understeer from the factory, if u r not careful, ur going for a roll.
 

Unclespud

Ready to race!
24mm H&R RSB and MPSS rubber here and I'm very happy with the neutral handling. I've never felt on the verge of having the tail step out, but perhaps that's more a function of the tires. In any event, the rear bar transforms the handling characteristics of the car. Like the OP, I keep the steering in sport mode for better control.
 
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