Yes the knock sensor throws the SC into a limp mode. So you'll want to fix that, but i warn you having a shop do it will be WAY more then its worth as its under the intake manifold. There are tons of write ups about relocation online.
Thats not bad, i've seen people get quotes in the $700-$1000 range which is ridiculous imo.Thanks, the mechanic said 2 to 3 hours?