jslr_2

Has anyone ever checked how accurate their average MPG display is?  Mine shows about 21 to 21.4 MPG ( I do a lot of highway driving). 

The other day, I did accurate manual check on the gas MPG, it was more like 19 MPG. 

The in dash display shows a couple of gallons on the high side.  With all of the computer stuff on board, there really isn't any reason why it should be inaccurate.

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My average MPG is consistently 2 to 3 miles above my actual average. Every time I fill up I record and then reset the Average MPG on both trip meters. Then, I calculate the actual. The difference between what the truck computer says it got and what it actually got is consistently between 2 and 3 mpg. The truck says it does better than it actually does. I've experimented with all three octane ratings with no apparent effect on mileage performance.

As an aside, even on the open road at about 71 or 72 mph, I've yet to get more than 17 mpg actual. The car only has 8,500 miles on it, and I'm told the mileage performance will get better as time goes on. That improvement, if it occurs, will no doubt be more than negated by rising fuel costs.

I've got the AIC-100x on order for installation in a 2004 GX470 that has the radio controls integrated into the NAV screen. I have a 6-disc CD changer that does not support text. When playing a CD, all I get is the CD number, the track number and a time readout of how long the current song has been playing.

In an earlier post, someone said that the AIC-100x will be seen as an MD changer but I can't determine if I'll get a read out of the song and artist information when in the XM radio mode. Has anyone done this installation who can give me some guidance on this?

Thanks.

jslr.2

Just purchased a 2004 GX470 with premier sound system. Anyone know if it's possible to add a Sirius Satellite tuner to the audio input selections?