You will most likely remove the heat sensors, so yes. With cars it's really, really worth tunning even with no changes, to fix the idle, gear changes, give you a crisp throttle response, and a tuner, that knows how to right a tune, not just buy one, can give you what you want. Cars I used a NGauge and load 4 tunes, valet, standard tune (not stock) basic 1/4 mile and a maxed out 1/4 mile. Thats using a chiller system. I guess like using an intercooler on the H2, as we don't have an A/C unit!
91 RON, never, 95RON 50 percent throttle, 98, all good. Sorry that Australian fuel, not all countries use the same scale.
You should get your tune money back just in fuel savings in 2 or 3 years. Don't use the cheapest tuner, go by word of mouth, and if possible, go and see them first, I've heard a car never moved out of the parking lot in Darwin NT and they paid for a $1,000 tune. You can in rare cases, also end up with a hole in a piston if they are dumb butts.