I used to regularly swap between the two, and swap computers when I did so, so I’d regularly be burning a mix or the rest of the premium on the stock tune, no difference to mpg. (Untuned)
Depends a lot on the engine or even just the timing.
My 2023 can ramp up and down power by analysing various signals.
I had an old sports car that could detect knock and pull timing but that was about it. Waiting until it knocks isn’t super healthy.
I have an old truck that I could set timing using high octane and get some better efficiency out of it, but I’d rather it be able to run on a mix of sewer runoff and coyote piss so it’s timing is pretty forgiving.
I used to regularly swap between the two, and swap computers when I did so, so I’d regularly be burning a mix or the rest of the premium on the stock tune, no difference to mpg. (Untuned)
Depends a lot on the engine or even just the timing.
My 2023 can ramp up and down power by analysing various signals.
I had an old sports car that could detect knock and pull timing but that was about it. Waiting until it knocks isn’t super healthy.
I have an old truck that I could set timing using high octane and get some better efficiency out of it, but I’d rather it be able to run on a mix of sewer runoff and coyote piss so it’s timing is pretty forgiving.