As I have been driving the 80 while installing my new lift for the mini, I have noticed a very annoying spark knock. It never spark knocks pulling up a hill or on sudden applications of throttle. The spark knock only occurs when you barely apply throttle to keep up a moderate speed, for example 30 mph or so. As a side note, I also noticed that my rpms drop right back to idle when I lift off the throttle regaurdless of low or high rpm and when I go back to lightly apply throttle it knocks. It seems the computer is not or cannot do anything about it. If I apply more throttle it stops. I'm thinking my issue with the rmp's dropping down is part of the problem. As I know my 22r and 3vz use a "dash pot" (?term?) to keep the rpm's from falling to fast when you lift off the throttle. I'm sure this is the same on the 1fz but anything else I should maybe look for?