Just tried to see if it was my EGR (reading this thread got me thinking about it;
Disabling EGR and fuel pressure solenoids - Page 10 - evolutionm.net)
After disabling it, nothing happened; same counts of knock.
I'm going to do a boost leak test next because I don't think I'm vacuuming correctly.
What do you guys vacuum at? I'm seeing -15/-16 vacuum from the brake booster line. Is this correct? I've seen a picture of someone at -20 for vacuum, so I'm thinking I might have a big leak somewhere.