[westwood1]

Does anyone notice your average fuel range or mpg decrease after the dealership did a master reset on the computer?

 

[racoon]

Not sure exactly what a "master reset" of the ECU is, but I know after replacing or disconnecting the battery it's a good idea to run the idle learn procedure.
There's a thread here:

https://www.crvownersclub.com/forums/19-maintenance-service/124522-idle-learn-procedure.html

It's 6 pages, so not too long to read through.

 

[Wombat]

Does anyone notice your average fuel range or mpg decrease after the dealership did a master reset on the computer?

Yep!
Had a new 100amp fuse replaced 12 mths ago this Mother Day and the first thing I noticed was that my L/100k went up, not much, but it was up from what it used to be.
I also noticed when filling up that the expected range dropped from 710 - 730 down to 610.

I will be doing a 620km (385 miles) round trip (all highway) tomorrow so we will see how that turns out.