[fzbob]

Is there a benefit to resetting the computer after every gas fill?

 

[XCNuse]

There's a better benefit to not resetting.
Why would you reset every single fill tank?

It'd be like throwing out a hard drive each time you shut down a computer.
Why? It has all of the information you probably want on it, why toss it? It certainly won't fix things, just make things worse.

You should technically get worse gas mileage the more often you reset it. The longer it has to learn, the better and more efficient the ECU can get.

 

[15GTHatch]

Are you referencing the ECU computer or the trip/MPG computer in the gauge cluster? The you meant the ECU...definitely not. If the latter, that's purely for your information/amusement and can be reset whenever you like.

 

[sizzle]

I reset it every time, it is the only way to add a new bar down all the bar slots

 

[trixx506]

It sounds like he is talking about the Trip Computer. Myself, I reset the Trip Computer average speed/average mileage every fill-up in order to get an accurate readout.

I use Fuelly to track my all-time fuel economy and have been doing so since 2010.

 

[fzbob]

Yes I am on about the trip...Sorry for the confusion.

I used to reset all the time in my last motor, but never really new why ...lol
(It was just recommended in the forum I used then)

Interesting read....
Fuel Consumption: How To Work Out MPG For Your Car

 

[Showa]

I just reset the MPG after 10k miles. I will reset it again at 20k miles and see what's the avg of the mpg.

 

[pete_89t2]

When to reset the MPG average really depends on how you want to use the information... If you want to track MPG over that single tank of fuel, reset at every fill up. If you want to determine MPG over a longer period, say dozens of tanks & thousands of miles, just leave it alone.

What I've been doing is resetting the trip odometer at each fill up, and calculating my per tank MPGs the old fashioned manual way - miles/gas to top off tank = average MPG for that tank. Of course this only works if you fill up every time, and there is some error, as you never get exactly the same gas into the tank before the pump shuts off.

I've left the MPG average alone to track long-term mileage over many tanks of gas.