mpg

[Inaba]

Holy Batcrap Josh... how the freak did you get 370 miles out of a tank?! Did you pay attention to the MPG increase for each of the mods? I have done LOOOOONG, SLOOOOOW highway drives (average 70mph) and have NEVER gotten close to 370 miles on a tank... and I run mine down to at least a 20 gallone fill-up. I'd like to know what I need to do. Anyway... I'll continue to drive and enjoy the VX no matter how bad it gets...

It's not a fluke... I've repeated it three times now. I can get 370 miles per 22 gallon fill up now with my mods. Prior to that, I was happy to get 300 per tank.

I think the PV cat-back system was the big boost. My Calmini Filter gave me maybe a few more miles, and I can't see how the Interceptor would give me a whole lot in milage. So that leaves the PV cat-back as the biggest gainer in MPG.

16.8 MPG seems to be my average now, with my mix of highway/in town driving. I suspect I could push it to about 450 per tank straight highway. Next time I go to Colorado, I will try to run it to empty and see how far I can get on a tank.

BTW - if I have the AC on, it will bring my full tank run down to about 330 miles per tank.

As for how I get 22.3 gallons in my tank, I fill that sucker up to the brim. Literally... The tank is filled all the way up to the top of the pipe into the tank. It takes a little while and finesse to get the gas to go in after the first couple auto-shut offs, but I've wittled it down to a science

By god, there will be no build up of gunk in MY tank!!

And Randy!! Where's my tires man! I've been waitin' for your call

[WyrreJ]

There are other things that may affect MPG, like mixture. Some states change the mixture of their gas depending on the season, some places like Cali have MTBE others like Illinois(?) have ethanol and who knows what else is getting mixed in there that kills efficiency.

I also read a blurb in the latest Car & Driver about Isuzu's new 3.5 V6. They said that the sulfur content of American gas prevents it from getting either ULEV and/or more efficiency, I forget exactly.

So, just another couple of possible factors that might apply, especially when comparing UK gas to American gas.

[VehiX]

Spark plug condition and gap along with tire pressure are some of the most overlooked itmes when people calculate gas milage. Not huge differences but differences none the less. Keep an eye on both of these items from time to time.

[andy454]

Just a heads up. It's not a good idea to fill the tank until the neck is full. You can get to a point that fuel can enter the tank pressure sensor and cause damage. Two clicks on the pump is SAE standards. Just don't want to see a fellow VXer cause some damage

[nocturnalVX]

No the VX doesn't get great gas milage... especially if your right foot is on the heavy side. However, it does seem some do better than others (yes Analog's was thirstier than mine) and they like RPM's too... power mode & 3rd gear around town, WOO HOO! Thanks Tone for showing me how to find the rev limiter... !
The VehiCROSS ROCKS!

[tiggergreen]

Well we just returned from Redmond and got 360 miles on the odometer. We filled up with 20.6 gallons making it roughly 17.5 mpg. I too have the custom cat-back system and attribute most of my mpg gains to this incredible mod.

This was driving with the Power Button on and with us having to go 85mph+ to get around a jerk in a Nissan Altima who sped up everytime we tried to pass him but would then slow back down to 74mph after a failed attempt. We also had a large Sears roof-top cargo box on, two adults and three small children...

I am actually getting worse mpg now that I have the custom chrome intake on the engine...

Brent

[coachreed]

Originally posted by Inaba
And Randy!! Where's my tires man! I've been waitin' for your call

Josh-
I lifted the VX on Sunday... going for an alignment tonight after I get out of training... I will go get the tires rotated and balanced tomorrow night... and well... whenever your ready for them... they are yours... I'll try giving you a call today/tonight... busy busy schedule these last few weeks... but I have changed jobs and so I now have a little more free time. I'll TTYL!

TTYL!

[WormGod]

Originally posted by tiggergreen

This was driving with the Power Button on and with us having to go 85mph+ to get around a jerk in a Nissan Altima who sped up everytime we tried to pass him but would then slow back down to 74mph after a failed attempt. We also had a large Sears roof-top cargo box on, two adults and three small children...

Don't go around him then.... go THROUGH him. The DC Beltway way.

[Sheik-YurBooty]

Heck!, I never checked to see how many MPG'S that I'm getting on my VX. But if I did check it, I probably would'nt drive it!!!

[Inaba]

Just a heads up. It's not a good idea to fill the tank until the neck is full. You can get to a point that fuel can enter the tank pressure sensor and cause damage. Two clicks on the pump is SAE standards. Just don't want to see a fellow VXer cause some damage

Really? I was wondering if this was "a bad thing" (tm) ...

Where is the sensor located? I have been filling up that way since I got the VX. Should I stop doing that then? I just hate filling up, so I try to go as far as I can in between gas station visits.

[tiggergreen]

Good idea, wormgod - I'll just get one of those custom car ripping attachments rigged onto my front-end... Once they see the spinning blades in their "Objects are much closer than they appear" mirror, they will hastily beat a retreat into the right lane where they belong. ;Dp;

Brent

[WyrreJ]

Two clicks on the pump is SAE standards.

What does that mean exactly?

[paultvx]

Originally posted by tiggergreen
I am actually getting worse mpg now that I have the custom chrome intake on the engine...

More air = more gas.

[Jonnie]

Just got 370 on 20 gallons, using a/c.

Jonathan

[Raque Thomas]

Originally posted by paultvx
More air = more gas.

I've noticed the same thing since installing one of those cone filters from eBay. Paul - I read your explanation earlier about this not adding any HP to the VX, but it sure FEELS like I've got more power now. I know the sound is going to mislead you some, but the "seat-of-the-pants" feel has changed quite a bit. To your quote above, if more air equals more gas - are we just washing raw gas out the exhaust? Or are we really getting the benefit of more gas & air mixture getting to the combustion chamber? My gas mileage has gone from about 290 miles per tank to around 200