Ok gang I just pulled the R16 resister on my 86 420 SEL (wrapped in tape next to brake booster). I am running Sunoco 94 in my car and I have chopped out the cat and smog pump and installed K&N air-filter from a 2005 Mustang. I didn't get any knocking or pinging but what I didn't notice is when I took it out on a high speed rip on the Queen's Way and returned home, my girlfriend was 10 years older and Hillary was Emperor of New North America!!! Ok Einstein jokes aside the car was far better off the line and felt like a new motor. Try it out.
Results may vary, if you experience head ache or allergic reaction consult a Mechanic, for this maybe a sign of fuel trouble. Don't pull resistor if your pregnant or trying to get pregnant.