I have a set , im in so cal , Id gladly contribute, would you need all 4 o just one front and one rear???
Some of the solutions presented are cool from a technical standpoint, but I still think people are making this waaayyy more complicated than it needs to be. The most elegant solution is of course to integrate similar to a factory setup, but all you should really need is a simple circuit similar to this...
You would just need two discrete buttons somewhere in the interior. Key on power engages the solenoids so comfort mode is the default. Key on also engages time delay TD1, which closes the contacts around the resistors for 1 sec allowing full voltage to pull the solenoids in, then after TD1 drops out the resistors lower the voltage for lower holding power for the solenoids (resistor size would need to be calculated after measuring current on the circuit used). Pressing the 'sport' button engages CR1 which then drops out the solenoids and time delay and holds itself with a holding contact around the 'sport' button. Pressing the 'comfort' button would then drop CR1, again closing the contacts in front of the solenoids and re-engaging the time delay. Both buttons would be momentary. I've been VERY tempted to install a set of these myself, which is why I took the time to work things out, just don't really want to tear my interior apart to run all the wires...
Many thanks to my father (electrical engineer) who took the diagram I drew up and made it actually work... :-D
...I may aquire one of the Bilstein buttons that Tob received and figure out which wires are for button, lighting, etc...
I emailed diyautotune, and provided them with information on this thread, they are reviewing this and will get back to me with pricing to do the controllers...I will keep everyone posted.
I also finally talked with someone at Bilstein who would give me the time of day at PRI and I have a contact there that can help us re-valve of existing 2-mode SVTPP Bilsteins.
I'm off next week and will hopefully get an update.
-J