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Discussion Starter #1
Hi there!

I just installed a ducktail lip & GT4 spoiler on my 981 Cayman and I've called several local dealerships in Southern California to see if they can code my Cayman to a GT4 to deactivate the motorized wing from deploying and they all gave me the same answer, "unless I purchased the GT4 spoiler at that specific dealership, they can't deactivate it".

So I have two choices....

1. Locate and remove the plug to the motorized arms.

or

2. Pull fuse #5.

I looked in the manual and it states "fuse #5 is in charge of deploying / retracting the rear wing as well as the filler flap? If I remove fuse #5, will I have issues filling my tank?

If any of you Porsche owners in the Southern California region know of any Porsche specialist that can deactivate the stock spoiler from deploying or any mechanics that have access to a PIWIS tester or if fuse #5 is safe to remove, please let me know.

Owners manual; Page 234 | 2013-2016 Cayman Manual | Porsche iManuals

Thanks for looking.
 

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I have seen a post from a company called 3W Distributing where they indicate they have a plug-in module available to disable the spoiler. My guess is they trick the sensor into thinking the spoiler is deployed.
 

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Certainly seems like those dealers aren't interested in making you a future customer...

Anyway, I put the GT4 ducktail on my Cayman several years ago, and via my local (and much more friendly dealer) they tried everything they could think of to disable the motor. As you surmised, we found the car can be coded to disable the wing, but then the motor power connector needs to be disconnected, the car needs to be powered up, then down, and then the connector can be reconnected again and the motor will not function. Tricky to do with the ducktail in place, as the bumper cover needs to have the fasteners removed so you can move it enough to get to the connector. In the end, I modified the ducktail to mount directly to the bumper cover (which remains stock and pristine) so I wouldn't have to go through the connector ordeal should the bumper cover need to come off again.

I am somewhat skeptical about the plug in module solution, as my understanding of the wing mechanism is that there is a Hall effect sensor that determines if the wing is either fully up or fully down, and if the wing position doesn't jive with the control unit expectation then you throw a code and get a fault light. But I suppose if someone has created a circuit that mimics that function, then it's possible.
 
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Discussion Starter #4
Certainly seems like those dealers aren't interested in making you a future customer...

Anyway, I put the GT4 ducktail on my Cayman several years ago, and via my local (and much more friendly dealer) they tried everything they could think of to disable the motor. As you surmised, we found the car can be coded to disable the wing, but then the motor power connector needs to be disconnected, the car needs to be powered up, then down, and then the connector can be reconnected again and the motor will not function. Tricky to do with the ducktail in place, as the bumper cover needs to have the fasteners removed so you can move it enough to get to the connector. In the end, I modified the ducktail to mount directly to the bumper cover (which remains stock and pristine) so I wouldn't have to go through the connector ordeal should the bumper cover need to come off again.

I am somewhat skeptical about the plug in module solution, as my understanding of the wing mechanism is that there is a Hall effect sensor that determines if the wing is either fully up or fully down, and if the wing position doesn't jive with the control unit expectation then you throw a code and get a fault light. But I suppose if someone has created a circuit that mimics that function, then it's possible.
Tell me about it...Oh well.

When you say you modified the duck tail directly onto the bumper cover, did you bolt it down to make it fixed like the GT4? Or did you use epoxy?

Thank you for contributing to this thread.
 

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It is bolted through the original rectangular openings where the motorized risers come up. The motor and risers have been removed. The bumper cover remains completely stock.

Note that the GT4 ducktail is designed to mount directly to the GT4 bumper cover (which is different from the Cayman one), and has no provision to mount to the Cayman motorized risers, so modification to the ducktail is required for mounting, whether mounting to the risers or through the riser holes.
 

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Tell me about it...Oh well.

When you say you modified the duck tail directly onto the bumper cover, did you bolt it down to make it fixed like the GT4? Or did you use epoxy?

Thank you for contributing to this thread.
I have never had any issues at all on my 2014 and it had the spoiler fuse pulled for a couple years now. You will get the occasional dash warning chime once you start repeatedly exceeding the deployment speed
 

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Discussion Starter #7
I have never had any issues at all on my 2014 and it had the spoiler fuse pulled for a couple years now. You will get the occasional dash warning chime once you start repeatedly exceeding the deployment speed
Did you pull fuse #5? In the manual, fuse #5 is for the spoiler deployment + the filler flap.

Since you pulled fuse #5, you don't get any issues with filling up your gas tank?
 

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Did you pull fuse #5? In the manual, fuse #5 is for the spoiler deployment + the filler flap.

Since you pulled fuse #5, you don't get any issues with filling up your gas tank?
Yes, that is correct. I read the same thing regarding the fuel filler flap when exploring this option but my car has worked exactly the same with the fuse pulled. I'm not sure exactly what "filler flap" function they are referring to as mine locks and unlocks normally when using the key remote and the car refuels same as it ever did.
 

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Discussion Starter #9
Yes, that is correct. I read the same thing regarding the fuel filler flap when exploring this option but my car has worked exactly the same with the fuse pulled. I'm not sure exactly what "filler flap" function they are referring to as mine locks and unlocks normally when using the key remote and the car refuels same as it ever did.
Pulled fuse #30 last night and started the car. No error message, button in the cabin is dead, and spoiler does not go up above 75+. So far, works perfect!
 

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Pulled fuse #30 last night and started the car. No error message, button in the cabin is dead, and spoiler does not go up above 75+. So far, works perfect!
I am planning on doing this soon. Do you mind taking a photo of where this fuse is on the fuse box? Also is this fuse in the hatch or driver footwell?

Sent from my HD1913 using Tapatalk
 

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I would like some clarification as well. The wing retract fuse is Row D Fuse #5 on the drivers footwell as stated by me above in the original conversation about 6 months ago. Its a 30 amp fuse and to my knowledge and according to the owners manual there is no such thing as fuse #30, but I would love to know about it if there is something elsewhere that I am missing that is a better option.

The fuse row letters are printed on the back of the fuse cover, so row D, fifth fuse slot over. Im assuming the comment above by the OP means the same 30A fuse, not fuse #30 as most fuse rows only have ten slots and all fuses in the manual are labeled only to #10 per row.

If this is the case, the spoiler will be disabled but you will also start to get an annoying little chime warning on the dash ever time the car passes back and forth through the 74 mph wing deployment speed. Its not terrible and its drowned out by my PSE with the windows down the majority of the time, but can be a little annoying on the highway with the windows up if you are not always maintaining a constant speed above or below the deployment value

There is another way around this with no warnings but requires a PIWIS. Unlike the 987, there is no PIWIS option to disable the wing, however the speed at which the spoiler will deploy can be altered so changing it up to some value like 250 kph/155 mph will effectively stop it from deploying on any street car, but there have been reports of dealers refusing to do this as they claim its a safety issue unless you have another wing mounted on the car already
 

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I would like some clarification as well. The wing retract fuse is Row D Fuse #5 on the drivers footwell as stated by me above in the original conversation about 6 months ago. Its a 30 amp fuse and to my knowledge and according to the owners manual there is no such thing as fuse #30, but I would love to know about it if there is something elsewhere that I am missing that is a better option.

The fuse row letters are printed on the back of the fuse cover, so row D, fifth fuse slot over. Im assuming the comment above by the OP means the same 30A fuse, not fuse #30 as most fuse rows only have ten slots and all fuses in the manual are labeled only to #10 per row.

If this is the case, the spoiler will be disabled but you will also start to get an annoying little chime warning on the dash ever time the car passes back and forth through the 74 mph wing deployment speed. Its not terrible and its drowned out by my PSE with the windows down the majority of the time, but can be a little annoying on the highway with the windows up if you are not always maintaining a constant speed above or below the deployment value

There is another way around this with no warnings but requires a PIWIS. Unlike the 987, there is no PIWIS option to disable the wing, however the speed at which the spoiler will deploy can be altered so changing it up to some value like 250 kph/155 mph will effectively stop it from deploying on any street car, but there have been reports of dealers refusing to do this as they claim its a safety issue unless you have another wing mounted on the car already
FWIW- A PIWIS can be used to disable the spoiler’s motor - in the rear electronics module you can find “coding value: ausstattung spoiler 2d (hauptantrieb)” and set it to “nein”. This completely disabled it and the switch in the center. To be extra safe, you can also up the speed at which it deploys up to 270km/h.

This way you won’t accidentally extend the spoiler by pressing the button (needed if installing a Getty Design wing).
 

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For my 2014 Cayman S it was Row C fuse 5 (30 Amp) that disabled the button for me. I haven't driven the car yet to see what happens at 76 mph. I will drive it tomorrow and test it.
 

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For my 2014 Cayman S it was Row C fuse 5 (30 Amp) that disabled the button for me. I haven't driven the car yet to see what happens at 76 mph. I will drive it tomorrow and test it.
I can tell you now what is going to happen. It’s going to allow you to go up above 76 mph once or even maybe a couple of times with no issue, then you will get a warning and a chime on the dash every time you pass through that value from that point on.

There is a hall sensor on the physical mechanism under the bumper that tells the computer whether the spoiler is actually deployed or not, so you cannot trick it. It will eventually start to throw spoiler failure errors
 

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Discussion Starter #15
I pulled the fuse on mine and I do get that chime / warning error after going past 76 mph but it doesn’t bother me at all. Blast some music and you barely hear it anyways.
 

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Can someone confirm if it is ROW C or D? and count 5 from left side I assume?

For those saying message doesn’t go way just pull the short stalk to acknowledge it. Goes away. Will come back when you hit 77 again.
 

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Yeah I likely mis-remembered when I posted row D. The rows are marked on the back of the fuse cover and the fuse positions and functions are all in the manual starting on page 233
 

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I had gone to the rip off stealer pre Covid to get the spoiler coded out. Even took written instructions with the actual coding but those idiots couldn’t figure it out and they just pulled the fuse and charged me $125 for labor. Arghh. I was like I could have done that numbnuts.
 
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