Dear fellow!
Yes you are right, less oxygen means Low RON needed for the combustion to take place and chances of knocking reduced to nil.
If you are not an Engineer then i cannot argue with you on that....but if you are then it is needed to clear the concept which i mentioned above.......
apart from theoretical brief explanation above,.....
Bro!! I am working in a Power Generation Company. We use to install & commission NCPs (Non- Captive Power Plants. The Engines / Generators which we use to commission are mostly Turbo charged....that's why we know the de-ration factor of internal combustion engines with respect to high altitude and high temperatures.
A couple of years back, when i used to commission the Gas Engines....we use to put a special KNOCK INDEX value with the help of OEM supplied software in the ECU of that particular Gen set to run on particular BTU fuel (Nat Gas) in the region where it is installed which defines the ignition timing / knock detonation mapping for that particular fuel.
If some UNICHIP Guy is reading this he may know what i am talking about so i think i am pretty clear about the concept what UNICHIP is doing....and the precaution of keeping a Turbo charged engine whether it is a Generator (stationary Engine category), or an Automobile (Dynamic engine category)....Whether it is a Turbo Civic, Turbo BMW, Turbo Audi, Super charged Merc......are the same......
2 months back i went to Nathigalii with a family friend on N-ONE Premium (3 cylinder Turbo charged Earthdreams Engine).....The experience was mind blowing without a single bit of a problem. How it ascends and decends......beautiful.......