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How-to: building a GPS-based PSE valve controller for passing track sound checks

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Old 07-22-2017, 01:16 AM
  #181  
orthojoe
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Originally Posted by hoops25
I think there may be some Cayman Clubsports at Laguna this weekend?? If anyone has any creative ways to make sound at Laguna (electronic, mechanical, exhaust) or at Sonoma (95db), I would greatly appreciate any ideas. Thanks. Chris.
Sonoma is 103db. No worries there.
103db even on de days.
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Old 08-23-2017, 03:22 PM
  #182  
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Old 09-20-2017, 05:08 AM
  #183  
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Any updates on controllers?
I'm keen!
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Old 09-22-2017, 09:49 PM
  #184  
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I just wanted to review the latest GPS module that I tested recently at Laguna Seca.
I was just a few days away from my track event and I didnít have any method to control the loud exhaust note for the weekend. I have seen and heard stories from friends about the dreaded meatball flag which ruined their weekend at the track and I did not want to suffer the same fate. I realized that having a working unit to limit the exhaust noise was a small price to pay.
Time was running out, but luckily I was able to contact Eddie (Crazy Eddie) who was able to get in touch with Tom to make and ship out a new unit to me in time for the weekend.

First off the build quality is fantastic. All the connections, wires, accessories, and the switching module itself looked and felt like a professionally made product. It is very solid with a sturdy dial and program button. Nothing looked like it was made by a hobbyist. No cheap cables or connectors with the unit. You can tell that Tom really takes pride in the work that he does putting these units and their accessories together.

Installation was easy (about an hour to remove all the trim pieces, carpeting, engine cover). Hooking up the unit was a snap and running power to the unit and the cords to the rear cubby box and putting all the pieces back was maybe another hour or so.

Since the unit has an easy to set personal GPS location, I was able to test it out in my neighborhood to make sure that it was functioning properly. This will be a great option for anyone that plans to use the car outside of California at a track that also has sound limits (or a complaining neighbor that canít appreciate the beautiful exhaust note every time you drive near their home).

When I got to the track I turned the selector **** into the star position, which has the Laguna Seca sound booth pre programmed. I tested it out by driving along the side road and the over the bridge near the booth and the unit worked properly. I placed the unit on the center ashtray with a bit of velcro for testing. It functioned perfectly during my first session and I was able to place the unit in the rear cubby spot behind the passenger seat for the weekend (easy to pull out to show to fellow Porsche drivers when asked about how I was able to bypass the exhaust note).
GPS signal was strong and it is great that it included a well built external antenna.

I also really like the options using the dial on this particular unit:
-Pre programmed Laguna Seca sound booth.
-Able to increase or decrease the GPS signal area when in ďprogramĒ mode.
-Always loud function
-Stock

Overall I am extremely happy with this unit. It works great, easy to install, well built and I was able to get fantastic support whenever I had any questions on the install or operation.
If there are any of you debating getting a device like this, I would highly recommend getting in touch with Eddie. I have seen other units out there, and there is really no comparison.


Full disclosure: I have never met Eddie or Tom and I paid full price for the unit. My only previous communication was with Eddie when purchasing his custom made bolster protectors, and I can tell you that he will go above and beyond what most people expect great customer service is to help out fellow enthusiasts.
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Old 09-22-2017, 10:22 PM
  #185  
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can a unit be made with an on off button instead of GPS?
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Old 09-23-2017, 01:13 PM
  #186  
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Originally Posted by C4SGRPDK View Post
can a unit be made with an on off button instead of GPS?

That is a good question and I was wondering the same thing. There have been discussions on the forum about this and some seem to think that keeping the valves closed for an extended period of time, especially at high RPM's on the track might not be such a good idea. I do not know if any of the people posting their opinions are actually vehicle engineers that have enough knowledge on the subject though.
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Old 09-23-2017, 01:53 PM
  #187  
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First, thanks for the kind words on the Track Nanny, and very glad to hear it worked well for you. I've been fine-tuning the unit for production for a while now (life gets in the way) and have been hand-building a few here and there -- mostly as a result of Ed leaning on me for his GT4 cohorts. The good news is the unit is now track-tested and is working like a champ.

I will be having a batch assembled at a fab house in the next month or two and finally make them available to all. In that regard, it would be helpful to get an idea of how many people might want one -- to gauge how many to have made. Look for a new post in the coming days on that.

The key difference with the Track Nanny is that it can be user programmed to work anywhere with the push of a button. When you turn the dial to the program position, you just push the button wherever you need the car to go quiet (e.g., when you drive past a sound booth, or the hospital, or that cranky neighbor). Wherever the car is at that point becomes the center of the quiet zone, and you can then turn the dial to make the zone as big or small as you need. It will then stay programmed for that area until the next time you program it. You can program it once and forget it, or change it as often as you want. You can also turn the dial to "stock" so that the car functions as it would without the unit installed; or turn it to "loud" to keep the exhaust open all the time. The "star" mode on the dial is just to add options. I can program it for your home track, for example, so that you wouldn't need to program it unless you venture to new locations.

I've not added an "always quiet" mode for fear that the car isn't designed to run that way on a sustained basis. I have no insight on whether that's a well-founded fear, but figured better safe than sorry. If important to anyone, I could always make the "star" mode serve as "always quiet."

(P.S., if all you want is a switch to turn the PSE on and off, there's no need for all the hardware. You could literally do that with nothing more than wires and a switch.)
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Old 11-01-2017, 03:27 PM
  #188  
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Last edited by GTS4TP; 11-01-2017 at 03:43 PM. Reason: Nevermind. I found my answer
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Old 11-15-2017, 07:52 PM
  #189  
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I can confirm that this works for a Boxster Spyder, same wiring setup as GT4.
And it works a treat, I’ve gone from 100dB at a track with a 95 limit, to being so quiet at that spot that it’s eerie! It’s almost like you have swapped for a Prius (sound wise, certainly not power wise)
My preset location worked great, custom locations are easy to do, looks neat, small enough to tuck out of the way. In fact I left it tucked away the whole time at the track. Didn’t need to touch it. Just confirmed it worked on my first lap and then the rest of the day just powered on!

Thanks - great product and works brilliantly.
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Old 11-15-2017, 09:37 PM
  #190  
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Originally Posted by Dicknose View Post
I can confirm that this works for a Boxster Spyder, same wiring setup as GT4.
And it works a treat, Iíve gone from 100dB at a track with a 95 limit, to being so quiet at that spot that itís eerie! Itís almost like you have swapped for a Prius (sound wise, certainly not power wise)
My preset location worked great, custom locations are easy to do, looks neat, small enough to tuck out of the way. In fact I left it tucked away the whole time at the track. Didnít need to touch it. Just confirmed it worked on my first lap and then the rest of the day just powered on!

Thanks - great product and works brilliantly.
Very glad to hear that. How amazing is the modern world, where someone can sit in California and program a car to go quiet on one little patch of road on the other side of the world. Thanks for reporting in and for the great feedback!
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Old 12-30-2017, 01:00 AM
  #191  
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Does anyone have links to the updated firmware files? The Dropbox links don't work any more...
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Old 12-30-2017, 01:38 PM
  #192  
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Here's the V2 version as previously posted here. I renamed it with a .pdf extension so the forum software would accept it. Just change the extension to .ino to use it with an Arduino. This is the software for the original Arduino version, as posted by Mech33. If you are using one of my Track Nannies, the software is completely different...
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Old 12-31-2017, 01:18 AM
  #193  
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Thank you! my box I got from AlekShop must not have had the software loaded right or something. Seems to be working now.
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Old 01-14-2018, 01:25 AM
  #194  
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I just installed a GPS exhaust controller in a 991 GT3RS. Thread here if interested. Thanks to Mech33 for the innovation.

https://rennlist.com/forums/991-gt3-...l#post14729605
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Old 01-28-2018, 01:17 AM
  #195  
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I can confirm that the Track Nanny GPS PSE controller also works for the 991 GT3 RS. With stock exhaust and no turndown pipes, I tested at 89.6dB today at Laguna Seca. For comparison, another GT3 RS with stock exhaust blew about 96 dB.
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