"Fuel Economy Modification" for xBs?
 

I read in another thread https://www.scionlife.com/forums/vie...tion&&start=20 about a specific "Fuel Economy Modification" for xBs. It possibly has something to do with reprogramming the onboard computer, but when I asked, Wendall, at our Big Island Toyota Service Dept, he said he couldn't find reference to such a procedure.

Can anyone shed some light on this? It's of interest to me because I only got 29 MPG on my first tank of my new (for me) 2006 xB (6200 miles).

Is there something I can tell Wendall, perhaps point him to a publication?

Thanks,

Kerry

it's normal. you might get "low" mpg every now and then. nothing wrong with your car.

no fuel economy mods that i know of other than the standard oil, lubes, fluids, and driving habits to maximize mpg.

i have an 06 xb and i get 38-40 mpg. All i have is an aftermarket intake. MT.

^^^ that's really good.

i typically get high 20's (26-29) when i'm doing urban driving with lots of stop and go. highway gets up to low 30's, but no more than that.

check your wheel weight and size. that will make a difference. your tires will make a difference too.

There are at least 4 threads on this topic. Some people claim up to 50MPG, but I think 38-40 is a much more realistic goal. Try the search feature.

06 manual here, i get a consistent 35mpg and all i did was remove the snorkel.

Get and aftermarket intake. I have the fujita and the hks. the fujita gives a lil more power. The hks is a gas saver in my opinion b/c it doesn't make any cool sound, it's quiet. And it keeps you in gear longer, at lower rpms. I can run my 2nd gear up to 35 mph and still be under 3000 rpm. Very nice. More power.

the most significant differences in mileage you'll be seeing is through driving habits...

lead foot = bad gas mileage

Apparently there was/is a "Fuel Economy Modification" procedure because d114, https://www.scionlife.com/forums/vie...tion&&start=20 , had it done and it added 2 MPG.

Thanks,

Kerry

I added a short ram intake and my mileage went up....averaging about 31 MPG...even with 18" wheels

I have a turbo boosting at 5psi and I have 17" rims and i can still average 31 mpg, sometimes 32 0r even 33 but if I lead foot it I can get as bad as 21!

something must be wrong with your boxcars...i always get 35-40 mpg on my box car. Sometimes with bad traffic and mostly highway driving.

I use to get an average in the low to mid 30 mpg in my 05. but now in my 06 I only get around 25 mpg at best. but it is no highway driving and with the 05 I used the freeway quite a bit but I hated the rock chips so no more freeway driving I guess the lower mpg are the trade off but I still get rock chips :evil:

Everyone has forgotten how the NGK Irridium plugs gapped to .044 helped mpgs by a couple. That added with running lightweight wheels, K&N drop in filter and removing the snorkle should net you up into the 32/35 range.

The 65 to 75 mph of highway driving will decidedly NOT produce higher mpg when compared to the posted 45 - 55 mph of the two lane roads. I've noticed a good 8 mpg difference between the two types of driving.

Does snorkel = stock air-intake inlet to air-box ??

Has anyone had Toyota do the "Fuel Economy Modification" as mentioned in the top of this thread?

Thanks,

Kerry

Re: "Fuel Economy Modification" for xBs?
 

I have the same car, and average 35 mpg every summer.
http://aatherton06.home.insightbb.co..._xB/xB_MPG.htm
The most effective fuel economy modification is a reprogramming of the onboard computer located in the driver's seat.

You've described what appears to be the service request that d114 got for free. Problem is, our service dept. had not heard of such a reprogramming service procedure.

It would nice if I could refer the Toyota Service Dept Manager to a document/whatever to verify that it's a genuine Toyota procedure.

It would be nice if we could validate or dismiss Toyota's "Fuel Economy Modification" procedure.

While it's true that much of the reported disappointing xB mileage is due to owner behavior or mods quite a few could be due to a computer setting—and therefore reprogrammable.

Myself, I expected 33 MPG (6200 miles on a 2006 xB) and got 29. I expected and I'd be happy if I averaged 32.

Thanks all,

Kerry