nhnguy12

Some more coding fun for those of you with PIWIS clones. The settings for the spoiler are much more customizable than what comes from the factory. I'll do my best to describe what has been coded in the picture above.

In Normal & Sports mode:

• An initial wing height (300 "steps" out of 360 possible height adjustments) that raises at 120kmh and lowers at 80kmh
• A secondary wing height that raises to 350 "steps" at 160kmh and lowers back to the first height setting at 140kmh
• Effectively coded out the third height adjustment by setting the activation speeds to unrealistic values (500&400kmh). This can be done to the previous two height settings as well to effectively deactivate the wing at all speeds. Might be useful to those with aftermarket wings without having to pull fuses.

In Sports Plus mode:

• Wing immediately raises to highest height setting at 100kmh and completely lowers at 50kmh (I set the maximum height to 350 "steps" but you can do 360 if you want to go full air-brake)

I drove to a very out-of-the-way gas station to confirm the coding was working as described. I didn't think to take pictures of how the wing looks at different height settings and I'm now hiding inside because it is +100F outside here in Arizona. I will update this thread with pictures if I can spare some time later this week.

thecajunboy

Thanks. Great information. I've been playing with the software simulator before I splurge on the interface. Was wondering what the different settings were all about. Didn't make sense to me, but perhaps my car's coding has been messed with. In Sport + mine deploys at 120Kph and retracts at 80Kph. I drive in Sport + almost all the time so I can't say I've paid attention to the actions in Normal and Sport, but I'd venture a guess that they're all the same on mine. I'll check it out in the next week or so. It's on Quik Jacks right now and I don't feel like taking it down just to put it back up since I'm planning an oil change this week.

nhnguy12

So the separate rule-set for Sport Plus mode is actually deactivated from factory. The first two settings shown in the screenshot activates the ability to have Sports Plus mode change the spoiler settings.

thecajunboy

It took me a few reads to understand, but I've got it now. Finally took a test drive yesterday to check deployment speeds across the modes, and it appears to be factory default with Sport Plus separate rule deactivated. I didn't check the 160kph step though. That's gonna take another trip.

nhnguy12

I (allegedly) tested the 160kph step this weekend. Works as intended.

yobiwan

Thanks for the great information. My car is 991.2, so the numbers in the details are slightly different, but thanks to the information you posted, I know what the numbers mean. One question I have is which of the items correspond to the spoiler height in sport plus mode?

is it SollPosDrehHallSp4 ?

IndigoInkTaco

Good info. Nice to see the screen shot of it too. Makes it easier to understand.

nhnguy12

Yes it is SollPosDrehHallSp4.

I believe for the 991 cars you can also adjust how the spoilers behave relative to engine temperatures as well.

DriverDaily

Can you set the max height lower than 300 steps?

nhnguy12

You for sure can. 300 is already quite a bit less aggressive than the 360 height that comes from factory. I'll take a picture of it later.

DriverDaily

Amazing, just what those of us with ducktails need. Thanks for figuring this out!

nhnguy12

I would recommend raising the activation speed to implausible speeds instead of setting the spoiler height to zero. That way you can still manually raise the spoiler with your in-cabin button for cleaning/detailing.



Here is the spoiler height set to '300 steps'. A lot less aggressive for highway cruising at ~80mph. The settings I have outlined above still raise the spoiler to basically the "full" height either above 100mph or if in Sport Plus mode so there won't be any more lift than stock if you're really on it.

yobiwan

Unfortunately, even though I set it up as shown in the photo above, it doesn't work as desired in Sport plus mode. but This is a result of driving with the soft top open, so it could also be an effect of opening and closing the top. I'll do some more testing.

nhnguy12

I haven't pulled out my PIWIS in a little bit. I think I remember seeing some spoiler settings pertaining to the soft top though.

Thacker

This is awesome! I want to change the coding on my '14 CS so that it comes up at 45 mph and goes down around 12 mph. I think it looks cool.

I guess most competent shops with PIWIS can do this? Thank you.