well its been quite awhile since I made a new thread and i had a question sooo...
here's the question: this is going to sound stupid but, remember I'm 14 so i dont have much real experience with cars.I was wondering if it takes less fuel to just let off the gas and slow down than to put the clutch in when you slow down/coast.
I thought it was better if you just used engine braking to slow you down because the ECU isn't needed to provide fuel to the cylinders because it can keep running by the inertia of the engine and the car....right?
So basically what I'm asking is if the ECU is still providing fuel flow to the cylinders when you take your foot all the way off the gas and its not at idle. Because I thought the idle was for to start adding fuel when the rpms got down to a certain point.
My dad and I got in a quite long(and a bit heated, too) discussion over this and I was just wondering. I think I'm right