Thread: Air intakes and chipping it

Originally Posted by RhinoZ24

Using premium over regular won't do anything for power or mileage, the only difference is the octane rating, i.e. how fast/completely it combusts. All it will do is cost you more to drive. For $3.50 a gallon, that's not bad, makes me want to move to Canada from California where gas is still around $4.50 a gallon. All you can really do is drive with a lighter foot.

Ryan, while you may be correct 99% of the time with any other engine, the EcoBoost is different. Ford recommends using 93 octane when towing or hunting for power. The knock sensors in the EcoBoost will advance the timing in the engine and there is a discernible difference in the power output when using 93 versus 87 octane gasoline. This is only true for the EcoBoost, though.

I was unaware of that fact, never had an EcoBoost and don't know anyone personally that does lol. That's interesting that it does that, smart design.

Mine also does a little better on fuel with premium compared to regular. It's actually cheaper to use premium even tho its $.020 more expensive. The other thing I've learned about the EB is it loves to drink anything with ethanol in it. I lose 2-3 mpg if I use a 10% ethanol 89.

Originally Posted by Raptor05121

there is a discernible difference in the power output when using 93 versus 87 octane gasoline. This is only true for the EcoBoost, though.

my dads 5.0 mustang is the same way....