Well, I had fears that the dual exhaust would be quiet, especially with smaller turbos, catalytic converters, and muffler… As it has turned out, it is really freaking loud. First measurement, I just about crapped my pants with over 100dB at idle… I noticed it was loud, but didn't think it was quite that loud.
I was able to get this down by lowering rpm, and doing a few other tweaks… then redid with dBA and it was a little more reasonable.
With cutout installed to have one muffler on one side, and other side bypassed, it sounds twice as loud, but surprisingly only a few dB extra. I think the reason it sounds twice is loud is around the harmonics vs. just the peak value.
Other items -
Old school Soundstream amp = 1 point – alternator – 0... fried the rectifier on my stock alternator . Had a spare alternator with a bad bearing, but good rectifier that donated some parts for the time being. Going to have to revise my sub configuration as I had a couple smaller subs on rear deck and the 12” bridged down quite low. The Dayton seems to need a little more juice, even infinite baffle setup, than I was hoping for.
Have to say the ProEFI has been great for the built in sequential tables. This really is the only way to do this is by having control of timing, wastegates , etc. all in the same piece of software. Wish more changes could be done live without the dealer ECU, but is what it is.
Also, the fuel pressure sensor already saved the day. Second fuel pump wasn’t coming on due to pin issue, fuel pressure dropped at high rpm, ProEFI compensated via injectors and even cut power.