First thing I did was build the DS2 library as a standalone to unit test it. Fed the tests some real data coming out of my DME and fortunately the logic in that library seems good. Test code snippet:
I then set up the programmer and PlatformIO in VSCode to flash the board. First time using PlatformIO for Arduino stuff and it's pretty nice. Feels a bit more professional than the official Arduino IDE.
The Gauge.S board is surprisingly simple. At its core, it's just an ESP32 connected to a TJA1021 for handling D Bus communications. This means I can write some super quick Arduino code to send out DME requests and then listen to what comes back. Code is written, just need to find some time to test. I should start billing for the time spent debugging this...
Anyway, onto some other stuff.
Decided I didn't want the cooling efficiency tradeoff of the Rogue power pulleys anymore, so swapped them out for stock. Old stock PS pulley was cracked, so brand new one is in. Don't want to think about what that part is gonna cost in a few years.
Power pulleys:
Back to stock:
Didn't order new idler pulleys because the ones on the car are fairly new, but of course I found them both to be bad with the belt off. It's crazy how little these things have lasted. Think I've gone through four sets since I bought the car? Oh well, new ones ordered.
Then met up with Bry5on and Slideways to do some tuning. I mean, in reality I just provided another set of hardware to experiment with and Bry5on did all the work, but still
Newest version of the mullet tune is even better. There used to be a bit of a torque dip at 2-3k rpm, but now that range feels awesome. Need more seat time to find any nuances, but so far feels great.
And then on the way back home I heard the dreaded failed CSB rumble under load. Incredible timing with a track day less than a week away. Parked in the garage and immediately took things apart. Interestingly, I found the CSB in great shape. However, the real failure more was way, WAY scarier:
I have no idea how this happened. I always torque this bolt with the driveshaft in the car, so that I can get as much torque on it as possible. Maybe another case of the track rattling things apart?
Fortunately, both the bolt and the threads in the driveshaft were perfectly fine, so I poured two gallons of threadlocker on the bolt and did the double wrench thing to torque it to 750,000 lb-ft. Hopefully this doesn't come undone again.
Perhaps unsurprisingly, torquing this bolt back up cured about 95% of my drivetrain clunk. It's crazy how much quieter the car is now. I thought it had been extra noisy recently... Will keep an ear out for similar noises in the future.
And lastly, here's a photo dump of the dust boots on my front calipers. Want to run an experiment with the scoops, so swapped some fresh GiroDisc boots in.
Old GiroDisc on FL caliper:
Old GiroDisc on FR caliper:
New GiroDisc on FL caliper:
New GiroDisc on FR caliper:
Interestingly, the rear caliper boots are still the stock Porsche/Brembo ones and those are showing absolutely no signs of failure
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