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Discussion Starter #1
Hi all,
am experiencing extreme softness from my ride. I'm guessing the shocks are up. Anyone changed to performance setup? Or changing to GTS stocks is good enough? For better handling I mean...
 

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We also offer a sport suspension option for the QP that utilizes performance springs that are designed to work with the factory skyhook suspension. Several customers here on the forum have installed this system with good results.

Essentially, your factory absorbers do a fairly good job and are adjustable electronically, the springs themselves however are quite soft and so you can achieve a very good result by lowering the car a bit on these stiffer performance springs. The difference in handling is substantial without affecting your ride comfort by too much.

Feel free to give me a call to discuss. We also carry the KW V3's however they are quite a bit more than our sport spring kit.

Best Regards,
-- Jeff
 

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I actually swapped an Executive with a sport GT skyhook module on an 06 and the suspension firmed up a bit too. It plugs right in and has different dampening settings. But it won't do what the FD springs do.
 

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Jeff, can you verify JSRJunkie's approach? Is this dampening difference for real? Is this what you are trying to manipulate with the work on a dampening module for the QP?
 

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I haven't yet seen that this approach would produce different dampening.

Although in theory it's possible, if the programming is in fact different. In any case, after driving both models... I don't think that there is very noticale difference in the dampening?

YSR, did you notice a real improvement or just a small one?

In any case, we're still working our our variable dampening module... I really hope that I'm able to get it finished up soon!

Best Regards,
-- Jeff
 

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It was enough to make compression firmer. I did it for a client that is a performance enthusiast who had bought a "QP" not sport. After driving a while he thought the suspension was too soft, more luxurious, and not as sporty as he wanted when he purchased his QP. After communication with Maserati, we installed the GT Sport Skyhook module and it changes the response to the input from the inclinometers, it did not effect the spring preload which is what the Formula Dynamics spring helps with. It is hard to differentiate the difference between preload and compression. The spring rate effects the rate at which the shock compresses at only one rate unless you see a change in the way it is wound, like the oval profiled springs that are variable rate. The springs in the GT are closer to what Jeff offers with performance in mind and work in conjunction with the module that sends a signal to the shocks to adjust the valving electrically. The thing I like about Jeff's springs is that they are shorter and are at a higher spring rate to prevent bottoming out that adjusting Maserati springs would not help prevent. They allow a performance stance with reliablity in mind. I hope that clarifies and did not open Pandora's Box. I've driven and installed those springs and recommend them if you want performance.
 

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I have Jeff's springs on my skyhook 2007 QP. I was the first customer and we did the optimization for the skyhook QP "together" per se.

I like the benefits of the lowered, stiffer spring. I think a slight "bump up" in shock dampening would help to resolve a slight increase in bounce over larger bumps (speed bumps), etc.

I know Jeff is looking into a dampening module to actively provide different dampening modes for the skyhook shocks. Likely and even better "full" solution to what you've introduced with this thread.
 

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Confused

...I like the benefits of the lowered, stiffer spring, but those of us that have installed them agree that the dampening could use a bump up to better match the stiffer springs and resolve some bumpiness...
Thanks for sharing your FD QP spring experience. I am hoping to also install Jeff's springs, but I am suspension naive, and don't understand all this preload, spring rate etc. discussion. Before committing, I want to better understand what to expect. In particular I am a bit confused by what you mean by "bumping up" the dampening.

My Sport GT skyhook has two modes, normal and sport. In sport mode the suspension stiffens (in addition to changes in shifting).

1) Am I correct that this perception of stiffness is a function of increasing the dampening by the shocks? i.e. it is harder to compress the springs, and they return to resting state more slowly?

2) Are you saying that even with the Sport GT skyhook module, if I were to install the shorter FD springs, I would want to have a setting above the stock "sport" mode to optimize handling and comfort?

Thanks in advance for helping me understand.!
 

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1) Am I correct that this perception of stiffness is a function of increasing the dampening by the shocks? i.e. it is harder to compress the springs, and they return to resting state more slowly? Yes, you are correct. When you select sport, the module increases the compression by reducing the ability of the shock oil to pass through the piston in the shock.

2) Are you saying that even with the Sport GT skyhook module, if I were to install the shorter FD springs, I would want to have a setting above the stock "sport" mode to optimize handling and comfort?No. You would not need anything else to increase firmness in your suspension because your Sport Gt is already tuned for maximum reaction to inclinometer input.

Thanks in advance for helping me understand.!
Does this clarify?
 

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According to Jeff, I believe YSRJunkie is incorrect on his second statement. Apparently the dampening of the shock is infinitely variable (or at least largely variable) across a range on input voltages to control dampening. And, the current set-up does not fully exploit maximum dampening.

So, yes the shocks are underdamped with the stiffer springs. BUT, the overall performance and feel is much better than stock. AND FINALLY, if Jeff can create a module to further dampen the shocks (above the Sport GT levels) than the balance of the stiffer and lower springs can be better optimized with the existing skyhook shocks.

Jeff, please chime in...
 

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Dampening

...yes the shocks are underdamped with the stiffer springs...

Jeff, please chime in...
Thanks again for input. Could ask though for further clarification of what you mean by underdampened? What exactly does this mean in terms of cornering and or going over bumps? Does the ride feel bumpier i.e. car shoot up and then back down quickly? Sorry for not very precise terminology!
 

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Take a dynamics class!! Just kidding...

Underdamped means to much oscillation around the equilibrium position. So, you hit a bump. Ideally you'd like the car to settle back to steady quickly. Properly damped systems will hit the impulse (bump in this case), have a reaction (compression in this case), be dampened downward and then upward (upward more important on a car), over-shoot the original position (before the bump was hit) and then settle to equilibrium right after the initial overshoot (without dipping back down again into compression).

Since the shocks are under-dampened, the car oscillates a couple times (especially at low speeds) with the stiffer springs. Not the case with the OEM springs because you don't need as much dampening to compensate for the rebound force of the lighter OEM springs.

Does this make sense. Is Jeff at the casinos or what?!
 

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Jeff at the Casinos... not likely!

The stock absorbers will firm up and down further than is offered with the SportGT. i.e. there is more adjustment available than the factory currently provides with the Normal and Sport Settings. We are currently working on a module that should achieve full control of the suspension dampening. This will allow customers to tune their damping as they see fit and the installation should be quite simple. This is a feature that is not offered on many cars so it should be an excellent benefit to customers with and without our Sport Springs.

Best Regards,
-- Jeff
 

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Bottom line is that the stiffer springs are a significant improvement in ride and appearance for the QP.

Then, eventually adding the suspension module with take that significant improvement and provide full optimization and control of the dampening. Furthermore, installing the module will not require any re-work to the installation required to install the spring kit.

I have no regrets installing the stiffer spring kit. If you are considering it, do it! If you are not yet considering it, consider it! Like the FD DBW and ECM, it has been a significant improvement for the QP.
 

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Discussion Starter #17
Thanks for all the replies and advice guys! Much appreciated. I guess I really need to look into upgrading the car's handling as recently I took a turn out of an highway exit at only 90km/h (est. 60mph), the car's pretty unstable...
 

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Just installed the FD springs, and can I just say the car now feels fantastic. It feels as if its a much smaller car now, almost NO body roll, you can even tighten your steering on a fully loaded corner aggressively and feel very secure about it. I dropped the car about 1.5 to 1.75 inches and i feel that this is perfect for me, although may be much too stiff and low for most peoples daily needs.

With my set up it feels as if the car is more composed and comfortable in a weird way, almost as if these springs are the right ones and the stock springs are too soft and tall for the suspension geometry. I track lots of different cars including the QP, and with this suspension set up, i feel as if it can definitely hold its own agains many more purpose built cars. I used to think the panamera was more planted and agile than the QP, but with these springs, I can now confidently say that the QP is still the ultimate four door supercar in every way.

Thanks again Jeff for the fantastic service, your tech really took the time to make sure everything was set up properly, he works methodically and precisely.

FD springs highly recommended.
 

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I have not upgraded my car, yet. However, I think I can speak from experience on Singaporean roads and advise Maxspeed185 that, given the healthy nature of Singapore's asphalt and general lack of concrete roadwork and speed bumps, he would be well off with a set of sport springs and a 1" drop. There's no real need to worry about damping in a country with roads smoother than Pocono Raceway. :thumbsup:
 

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Discussion Starter #20
QP's Handling

I have not upgraded my car, yet. However, I think I can speak from experience on Singaporean roads and advise Maxspeed185 that, given the healthy nature of Singapore's asphalt and general lack of concrete roadwork and speed bumps, he would be well off with a set of sport springs and a 1" drop. There's no real need to worry about damping in a country with roads smoother than Pocono Raceway. :thumbsup:
Noted and thanks for the advice Briik. Cheers!
 
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