My tuner argued a 93 octane tune on my 3.5 EcoBoost was pointless, but after a month of logging data, the difference in timing and power over the 91 octane file is actually huge.

I was ready to call it a waste until I saw the logs show a consistent 4 degrees more timing advance and a 22 horsepower bump on the dyno, so what's your take on paying extra for premium fuel tunes versus sticking with the cheaper gas map?

3 comments

3 Comments

averywilliams25d ago

22 horsepower bump" is not what I'd call pointless.

jamie_white25d ago

Depends on the car, @averywilliams. On a 300hp engine, that's basically a rounding error you'd never feel. It's only a big deal if you're racing for tenths of a second.

felixlee24d ago

That "rounding error" talk reminds me of my buddy who said the same thing until he actually drove a car with the 93 tune. He shut up real quick after feeling the pull from a stop.