Increased MPG or HP anyone????

[Violin]

Thanks - You provided quite a bit of info there and it was fun messing with you.

[07WYarisRS]

kept me busy for a while too

[Black Yaris]

ok this may sound a bit funny... or is is just a coincdence.... after switching to mobile one 5w30 synth i have been getting 3-4 MPG better gas miles..... I am thinking of switching over to amsoil 15w90 gearlube in my trans as well, maybe add a couple more MPG

[Violin]

Mobil One didn't do a thing for my mileage (I'll still use it though).

[DTM_Yaris]

Originally Posted by Violin

Mobil One didn't do a thing for my mileage (I'll still use it though).

Well after the lesson we got from 07 he still hasn't given you a concrete answer to why you are INDEED getting better mileage.
It was not an illusion. You increased the volumetric efficiency of the engine.
With the denser intake charge, and static ignition timing from the ecu stock program you will be able to increase your mileage slightly. It is slight but it is still an increase. In some cases you can get a few more MPG, but some don't ever see it. Due to the fact that they most likely see WOT more often now after modding the car.
Anyway, figured you might want someone to back up your theory.

[07WYarisRS]

That's because Mobil 1 is still a group III minaeral oil.

Black Yaris
if you have a manual trans use amsoil 75w90 gear oil.
It will increase your mileage slightly and free up a bit more power

[DTM_Yaris]

Originally Posted by 07WYarisRS

That's because Mobil 1 is still a group III minaeral oil.

Black Yaris
if you have a manual trans use amsoil 75w90 gear oil.
It will increase your mileage slightly and free up a bit more power

I would not jump to conclusions about increased power and mileage from adding AMS oil.

[Kaotic Lazagna]

i'm not going to act like i know everything mechanically with a car, but i can tell you with experience that an intake does increase your gas mileage. when i had my GTI, it had a Neuspeed intake on it, and on almost a full tank, i got between 360-400 on the full tank. however, in order to pass smog, i had to spend over 200 bucks for an OEM intake box. with that installed, i could only get between 320-360 on the full tank. all of this i calculated by using the trip-ometer and dividing the miles by the number of gallons it took to fill up. keep in mind, i drove very conservatively (really feathered the throttle when ever i had the chance to).

as for my Yaris, full tank calculations = avg. 45 mpg. but one time, on a 1/4 tank estimate, i got 62.something mpg. does anyone here know if the fuel guage is set to "drop" slower when it's full? i noticed that when i get to the half-way mark, the bars tend to disappear quicker.

[eTiMaGo]

Originally Posted by Kaotic Lazagna

i got between 360-400 mpg. however, in order to pass smog, i had to spend over 200 bucks for an OEM intake box. with that installed, i could only get between 320-360 mpg.

OMG the car to end our dependency on crude oil!

[Kaotic Lazagna]

Originally Posted by eTiMaGo

OMG the car to end our dependency on crude oil!

holy crap, should have proof read that. i meant full tank, not mpg. see what happens when you're sick, plus studying for finals...i'll go back and edit that.

[swng]

Originally Posted by Kaotic Lazagna

...............does anyone here know if the fuel guage is set to "drop" slower when it's full? i noticed that when i get to the half-way mark, the bars tend to disappear quicker.

Your observation is very valid. Please see:
http://www.yarisworld.com/forums/showthread.php?t=2692

When we try to find out if a modification really improves the car's fuel economy, your observation and what have been discussed in the linked thread must be taken into consideration. I would say scangauge and/or trip computer indications, or in the absence of them, long term average numbers (with methods like : https://www.fueleconomy.gov/mpg/MPG.do?action=calcMPG) are more reliable than the fuel gauge bars.

[Kaotic Lazagna]

Originally Posted by swng

Your observation is very valid. Please see:
http://www.yarisworld.com/forums/showthread.php?t=2692

When we try to find out if a modification really improves the car's fuel economy, your observation and what have been discussed in the linked thread must be taken into consideration. I would say scangauge and/or trip computer indications, or in the absence of them, long term average numbers (with methods like : https://www.fueleconomy.gov/mpg/MPG.do?action=calcMPG) are more reliable than the fuel gauge bars.

thanks, i did notice that my friends' cars do the same...oh, and i use the second method said in your second link. i'm not very good with words, so i made my description very long...lol.

[Mr.Yaris]

Originally Posted by Kaotic Lazagna

does anyone here know if the fuel guage is set to "drop" slower when it's full? i noticed that when i get to the half-way mark, the bars tend to disappear quicker.

The reason is likely in the tank's shape & design. My Camaro and my wife's Trans Am are both the same way. When the gas gauge reads 3/4 tank, it's really @ 1/2 tank, and once it reaches that mark, it drops quicker and quicker. When it's at 1/4 tank, you're pretty close to Empty, closer to 1/8 tank. I'm sure the Yaris is the same way. I've noticed this as well with my Yaris, and I'm sure if i asked my wife, she'd tell me her Yaris was the same way (yes, we have two Yarises. They're our "daily drivers" and the Camaro & T/A are our "weekend toys"...)

[swng]

You are welcome!
BTW, we all make long posts occasionally. I am trying to make this one short but I am limited by my poor ability.
Enjoy your modifications and happy posting!

[Kaotic Lazagna]

Originally Posted by swng

You are welcome!
BTW, we all make long posts occasionally. I am trying to make this one short but I am limited by my ability.
Enjoy your modifications and happy posting!

lol...yeah. btw, do you know where i can get/order a Belta badge?

[swng]

Originally Posted by Kaotic Lazagna

lol...yeah. btw, do you know where i can get/order a Belta badge?

I am afraid I don't. My main interest is fuel economy (you know, the mpg thing).
May be you can try moving your question to a thread where people discuss subjects like this (I mean, Belta badge) and I am sure you will get a reply from someone helpful and in the know .

[Kaotic Lazagna]

i looked all over the Internet, and can't seem to find any place that sells Belta badges...

[swng]

Originally Posted by Kaotic Lazagna

i looked all over the Internet, and can't seem to find any place that sells Belta badges...

I am sorry that I cannot be more helpful. Please try posting your queston in the sub forums for cosmetic modifications or classifieds. IMHO, you are asking it in the right forum but the wrong thread. There is no need to get off topic here, no matter how accommodating fellow members are.
You may get some useful replies from those sub forums. Prepare to be surprised by how knowledgeable many fellow members are. You know, this is the ultimate site !