Hey guys I am having a problem with my motor here recently I changed superchargers on my car and added a 3.4 pulley to help my car out some because it is low on compression. Anyway when going WOT the car pulled hard all the way through first gear but as soon as it shifted to second it fell on its face and almost died had no power at all and when I would give the car any gas it made a weird rattling sound which almost sounded like a bad spark knock. And today the same thing only from 2nd to 3rd gear WOT Same weird noise wondering if you guys had any ideas. Thanks!
Edit: Also My buddy has scanned my car for Kr and I had none