mpg improved by computer chip

[djvx]

Can't the computer brainbox on the vx be adjusted for better fuel economy? If there's chips for increasing hp why couldnt there be a chip to increase mpg. I can't afford to drive mine on weekend getaways. 140 miles one way so 280 miles x 14 miles to a gallon. 20 gallons x $4 a gallon. Thats 80 bucks for a stupid little trip! Idiot engineers couldnt make a 6 cyl get better than 15mpg. Or in my case more like 9 mpg on average non hiway.

Note: this site was around long before I ever joined and I will follow the rules, but it's very hard not being able to swear, so many times I want to go off on a diatribe of f-bombs, m/f bombs etc.

[blacksambo]

You should be able to do better than 9mpg? We have two '99's and routinely average 18 to 20 mpg. Ther may be things you need to fix like your oxygen senors etc.

[SilverBullet75]

I just replaced my Fuel Pressure Regulator and gained 2 mpg, plus a much smoother/responsive feel.

[HeckaTrebeka]

My 01 is averaging 18 right now, but that's because my TOD system keeps kicking on. I just installed a TOD off switch tonight. It was pretty easy. Now hopefully I'll be seeing a little better MPGs...

If you're getting 9 mpg in town, your tires better be gigantic!

[Gussie2000]

You got understand !!

Back in the late 90's early 2000's fuel price wasn't a issue as today so automakers didn't had MPG as a priority.

Actually if you check vehicules made from 1999/2002 the trend was similar.

Toyota 4runner 6 cylinders,nissan pathfinder V6,ford explorer V6,chevy blazer etc was all giving almost the same average mileage.

[Ldub]

I just installed a TOD off switch tonight. It was pretty easy. Now hopefully I'll be seeing a little better MPGs.

FWIW, without selectable front hubs, all the same parts are creating parasitic drag, wether the TOD system is powered up or not.

[Ldub]

Oh, BTW...there is a TON of useless snake oil/borderline voodoo stuff on ebay, claiming to increase hp & mileage...http://www.ebay.com/sch/i.html?_sacat=0&_kw=chip+Isuzu

This is my personal favorite...http://www.ebay.com/itm/BLUE-2-5-to-...252ebd&vxp=mtr

While it is quite probable that it will decrease HP due to reduced flow & increased turbulrence, at least it might sound kinda like a turbo...

[VXorado]

9 MPG is terrible. I still average 14-15 MPG with the 35s and a lot of added weight. Might be worth tuning it up and looking for issues.

My 01 is averaging 18 right now, but that's because my TOD system keeps kicking on. I just installed a TOD off switch tonight. It was pretty easy. Now hopefully I'll be seeing a little better MPGs...

It won't make much difference in MPG. Just slightly.

[HeckaTrebeka]

It won't make much difference in MPG. Just slightly.

I'm performing my highly reliable MPG test and I'll update everybody on what I get after the switch install.

[89Vette]

I just replaced my Fuel Pressure Regulator and gained 2 mpg, plus a much smoother/responsive feel.

This issue is definitely reported as the best diag/repair for the MPG blues! It's where the OP should start!

After that, djvx should consider (as LDub said) that there's really NO SUCH THING as chips that make factory cars create more HP. In the rare occasion that actually worked, you'd be looking at a chip that increased fueling. (You get a bit more power with more fuel.

But, the opposite isn't recommended. The cylinders run hotter when you lean things out. You might be able to find someone to do it -- if you're willing to burn up your valves. NO THANKS.

It is what it is. Except djvx: Yours is broke. Fix it. 9mpg isn't normal.

[89Vette]

And, if you don't like the post above....
http://www.gfchips.com/isuzuvehicross.aspx


Then tell us what you say to them 3wks after installation (uncensored of course)!

[HeckaTrebeka]

And, if you don't like the post above....
http://www.gfchips.com/isuzuvehicross.aspx

WOW!! 60HP gain for only $70 bucks?!? What a deal! Why doesn't everybody do this?!?

*sarcasm*

[djvx]

Milwaukee area where I live is very congested alot. I truly get horrible city mpg, but my highway mpg seems to be inline with others. I have big tires but they are a lightweight tire for their size. I have a rack with the spare on the roof, its a big spare so there isn't room for it inside. That could be an issue too. Plus all you can buy is ethanol crap gas which gives worse mpg. I will check on a few of those tips you guys offered. Thanks for the suggestions!

[Mile High VX]

Milwaukee area where I live is very congested alot. I truly get horrible city mpg, but my highway mpg seems to be inline with others. I have big tires but they are a lightweight tire for their size. I have a rack with the spare on the roof, its a big spare so there isn't room for it inside. That could be an issue too. Plus all you can buy is ethanol crap gas which gives worse mpg. I will check on a few of those tips you guys offered. Thanks for the suggestions!

Are you taking the mileage variance that your tires cause when calculating your mileage. I know that I have to add 5% to my miles driven before I calculate my mileage to make it accurate because of my tire size.

[BigSwede]

Idiot engineers couldnt make a 6 cyl get better than 15mpg.

Oh they can...when it's not hitched to a 2+ ton vehicle.

I can't think of a vehicle with heavy-duty 4WD running gear, fully boxed ladder frame, etc., that gets significantly better mileage.