What mods would improve mpg on an xB?

What mods will make it worse?

stop having a Lead foot


:lol: :wink:

lean the hell out of your fuel

What mods would improve mpg on an xB?

Install a raw egg between your foot and the throttle :)

Larger diameter wheels (perhaps)

Echo final drive gears (perhaps)


What mods will make it worse?

Just about anything else

Intake and exhaust will actually allow it to get better MPG if you ride it gently.Usually people tend to ride it harder then though thus getting worse MPG.

diet!!!!
yourself and lighten up the car :lol: :lol:
just kidding!!!

take out your jack and spare tire.
get lighter wheels and tires.
keep tank almost empty
don't have passengers
keep windows up
don't use a/c
keep car cleaned out
wax your car

get a s-afc and lean out your fuel

get a s-afc and lean out your fuel :lol: Just be careful with this one!

[quote="magicmanjk808"]get a s-afc and lean out your fuel[/quote

S-afc??

http://www.optauto.com/webstore/product_information.asp?number=APX-401-A913&variation=&aitem=2&mitem=2&back=yes

http://www.optauto.com/store/images/Apx-safc2k.gif

and why don't you try this out too... it's GUARANTEEEEED!
http://www.tornadoair.com/index.php

http://camillafilms.com/~mitchell/prop_full.gif

one of these on your bumper gives an extra 5 knots..




(...and that was post 100 for me)

http://camillafilms.com/~mitchell/prop_full.gif

one of these on your bumper gives an extra 5 knots..




(...and that was post 100 for me)

lmao, 5 knots... hahaha

5! I got ripped off then! I only got 2 wheel knot power!!

and why don't you try this out too... it's GUARANTEEEEED!
http://www.tornadoair.com/index.php

If you can get it through JC Whitney, then it must be true. Wait 2 tanks before resetting your trip and then calculate...that way you have 600+ miles on 10 gallons. :lol:

-Z

Larger wheels is a mixed blessing IMO. Yes you can get lighter wheels which might help, but unless you stick with 15" size you'll need lower profile tires, which for the most part are designed for better traction/grip, which also tends to increase rolling resistence, so mileage suffers. Add in the fact that you spent $500 to save mabe 25-50 a year in gas, and it's a hard sell.

If you have a fat spouce, here's the perfect way to get them to shave that butt down some! "It will help our environment honey!" :P

If you have a fat spouce, here's the perfect way to get them to shave that butt down some! "It will help our environment honey!" :P

:lol: that's so messed up :lol:

Larger wheels is a mixed blessing IMO. Yes you can get lighter wheels which might help, but unless you stick with 15" size you'll need lower profile tires, which for the most part are designed for better traction/grip, which also tends to increase rolling resistence, so mileage suffers. Add in the fact that you spent $500 to save mabe 25-50 a year in gas, and it's a hard sell.

If you have a fat spouce, here's the perfect way to get them to shave that butt down some! "It will help our environment honey!" :P

I saw something interesting once on a show and i think you should try it. Take a piece of string and tie a wieght to the end. Now take that string and hold it in your hand so it hangs about 6 inches. Swing it in a circular motion. Pretty easy huh? Now let it hang to about 12 inches and swing it again. It should be considerable harder to get it moving and keep it moving. Let it out more, and it becomes even harder to keep moving. This is the theory of rolling resistance. It takes more work to move the mass if the over all diameter is larger. Sure sticky tires play a roll, but its the overall larger diameter of the wheel attached to the hub that makes it harder to move the car.

Larger wheels is a mixed blessing IMO. Yes you can get lighter wheels which might help, but unless you stick with 15" size you'll need lower profile tires, which for the most part are designed for better traction/grip, which also tends to increase rolling resistence, so mileage suffers. Add in the fact that you spent $500 to save mabe 25-50 a year in gas, and it's a hard sell.

Good point. What I meant to say, and did so sloppily, was that larger diameter tires might improve mileage, simply because they slow the engine down a bit at cruise. It's a poor man's way of changing the final drive ratio. Changing other parameters, such as width or tread compound might well suck up any gain you make!

I note that bBs come with 65 series tires in Japan, whereas our xBs come with 60 series tires. It would be an interesting experiment to try 70 or 75 series tires on the stock wheels, but unfortunately there don't seem to be any 185/75R15 tires out there. You can get a 185R14 (80 series) tire that is about 2 inches larger in diameter than stock, so if you could scrounge a set of Echo wheels you could give this a try. It would slow the engine down by 8 percent from the stock tires, which would be a drop of about 240RPM at 60MPH with a 5-speed. This might have a measureable effect on mileage, but I wouldn't expect more than a mile per gallon.

George

And wouldn't bigger tires mess with your acceleration (or lack of acceleration)?

keep tank almost empty
this one will have you buying a $400 fuel pump* in a few years. the fuel pump is in the tank it actually uses the fuel to cool it off.

*i just threw in that amount. i don't know if it's actually 400 bucks for a fuel pump. it may be less, or it may be more :shock:

Go to the gas station and fight with the attendant about gas prices and see if you can pull a swap shop on them. If not, go home and print up some fake coupons for free gas with the purchase of a yoo-hoo and a hot dog. If none of those work, this one always work... While you're driving down the road, try to get behind a big truck, like a ford excursion or something, follow them until you reach a red light, get out your car, run up behind thiers, then attach a rope from the front of your car to the back of the ford truck(preferebly), run back to your SCION, jump in it, turn off the car and put it in nuetral. And get ready for the best gas mileage ever.

Go to the gas station and fight with the attendant about gas prices and see if you can pull a swap shop on them. If not, go home and print up some fake coupons for free gas with the purchase of a yoo-hoo and a hot dog. If none of those work, this one always work... While you're driving down the road, try to get behind a big truck, like a ford excursion or something, follow them until you reach a red light, get out your car, run up behind thiers, then attach a rope from the front of your car to the back of the ford truck(preferebly), run back to your SCION, jump in it, turn off the car and put it in nuetral. And get ready for the best gas mileage ever.

Hmm where would i attach the rope to the front of my car?

Jeff

If you pull out one of the big grills on the bumper, you'll find many places to attach the rope, OR Buy a strut bar, install it, pop the hood, and tie the rope to that!

Intake and exhaust all the way. It will boost your horsepower and up your gas mileage.

Restricting power will add fuel economy. It's as simple as that. No 200hp car gets 40mpg.

ill vouch for that iom selling my 260 hp talon and i get about 13 to 15 mpg

In addition to my own post, since I don't like editing them, people that say you get better gas mileage once you increase power (CAI, exhaust, etc) are lifting their feet off of the gas pedal to achieve better MPG. You CANNOT have more power and better MPG at the same time. More power is generated by more gas.

http://camillafilms.com/~mitchell/prop_full.gif

one of these on your bumper gives an extra 5 knots..




(...and that was post 100 for me)

that made me "Lol" literally, haha, good one :)

Restricting power will add fuel economy. It's as simple as that. No 200hp car gets 40mpg.

That has to be the most rediculous thing I have ever heard. So if you completely plug your exhaust system, you would get an infinite mile per gallon average, or is your theory non-linear? If you stuck a potato in a Corvette's exhaust, you would improve milage, right? :?

The truth is that the easier it is for your engine to operate, the better your fuel consumption will be. restriction beyond factory specs will cause you to lessen your MPG as your engine will have to work harder. Transversely, if you ran wide open headers, you would lose the exhaust scavenging capabilities of your exhaust system and once again, cause your car to work harder as the exhaust can be likened to a syphon that operates in conjunction with the cams, pistons, intake, etc....

the easiest way to "slightly" raise your MPG is to make sure that you don't have excess weight in the car, and your tires are properly inflated. (some recommend over-inflating by 5psi to lessen rolling resistance, but the gains are negligable and you then have to contend with slightly less traction.)

Restricting power will add fuel economy. It's as simple as that. No 200hp car gets 40mpg.

That has to be the most rediculous thing I have ever heard. So if you completely plug your exhaust system, you would get an infinite mile per gallon average, or is your theory non-linear? If you stuck a potato in a Corvette's exhaust, you would improve milage, right? :?

The truth is that the easier it is for your engine to operate, the better your fuel consumption will be. restriction beyond factory specs will cause you to lessen your MPG as your engine will have to work harder. Transversely, if you ran wide open headers, you would lose the exhaust scavenging capabilities of your exhaust system and once again, cause your car to work harder as the exhaust can be likened to a syphon that operates in conjunction with the cams, pistons, intake, etc....

the easiest way to "slightly" raise your MPG is to make sure that you don't have excess weight in the car, and your tires are properly inflated. (some recommend over-inflating by 5psi to lessen rolling resistance, but the gains are negligable and you then have to contend with slightly less traction.)

ok.