doesn't matter on acceleration, either soft or fast acceleration there a slight ringing at 2000 rpm, by 2200 rpm its gone. not sure if its all gears or not, usually notice it going from a stop.
lets first recognize what octane is and what it does.
First off octane is a by product from the refining process.....it is a hydrocarbon , for lack of a better term......which also means it is flammable. Second , the rating given to octanes in fuel is rated from 85 to 95....The lower the octane rating ,technically, the more easily ignitable it is. There is a ''compression '' stroke/ratio in the motor, A hemi is close to 10-1. This high compression means any lower octane fuel will start the combustion process, before the actual spark. Creating a knocking sound....It can also cause detonation with the engine turned off in extreme cases......this however rarely happens with fuel injected motors......no fuel......no detonation. Creating a ''tune'' is merely telling the motor when to spark, (no tune in the world will change the compression ratio). The closer the spark to TDC, the more efficient the motor will be.......setting a mileage tune , simply means you're messing with the timing.......but you're still getting the high compression!
Most 3rd gens require a 91 octane or higher, which is why I'm puzzled one would have to ''tune'' the motor to begin with.....lower ci motors notwithstanding.
Raising octane can actually be done out of the bottle, Mythbusters is a show.....mebbe a little more brainy , but still a show.
myth number 1, high octane is more explosive,powerful than lower octanes.
myth number 2, high octane increases horsepower and mileage because it increases the flammable aspect of the fuel.
truth, higher octane fuel creates optimum performance by matching the fuel octane ratio with the higher compression.
truth , 87 octane will ignite just as powerful as a higher octane outside of the motor.
Truth using octane booster can raise the compression point of any gasoline,
it's just not as glamorous when stated this way. It however does NOT make it (gasoline) more explosive.
Haven't ranted like this since an oil thread, whew!