Stefan, Ed, Abe and I have been busy installing the harnesses and working to get all of the devices working. I have a bunch of posts to catch up on, but Ireached a major milestone so this one will be out of sequence.
We had a successful first start! My dog took off in a panic because she’s been watching me work on the car her whole life, she’s seen the shirt and apparently doesn’t trust that everything went together properly… smart dog. That said, she prefers the exhaust sound to Stefan’s German techno music.
The first start sounded awful because two of the cylinders weren’t firing. The fix was simple. There is a dedicated PDM output for every two cylinders and one of the outputs wasn’t configured properly. The second start sounds much better. With a couple of tweaks we were able to get it to idle at 750 RPM and not loud. In the video below, note that the sound is smoother when the exhaust cutouts are closed. They are configured to automatically open when the throttle position is above 60%
The stepped, equal-length, 180-degree crossover headers combined with the titanium X-pipe result in the sound that I was looking to achieve… absolutely nothing like a LS. Stefan thinks it sounds like a lower-reving BMW LMDH (a flat-plane V8 hyper car).
The next big milestone is to get it on the dyno.