The people who live a couple houses south of me on the next block were swapping a motor into their Nova in their backyard. Sounds like they got it fired tonight at about 11:00 p.m. Sounds like open headers and either the timing is way off, or theres a flat lobe on the cam. They were revving it up, it was backfiring, making alot of noise. Didn't bother me at all. I just listened and thought to myself what the problem could be. Looked outside and saw a neighbor open their door and look outside. I bet people probably thout it was one of my rigs, but I'm innocent this time. Besides, I never start anything loud after 10 pm, and if I do its in the garage.