My first question is, given my current mods should my injector duties be as high as the 83% I am seeing?

I heard an odd sound today coming from the back of the engine bay. It sounded like a knock. It wasn't constant, I could hear it every five seconds or so... Maybe I'm just paranoid.

 

83% is normal and fine.

I've seen 100% DC @ 8100 rpm (as indicated on the commander) with base mod map - it's tuned on the rich end.

As far as odd sound goes, too vague. If clicking very fast it was the ISC solenoid.

 

I concur...
Do you concur Dr?..

Yes 83% is fine. I also get up around 99-100% from time to time.