what's the approximate loss in mpg for having an i/h/e setup? cuz my mileage sucks right now.

 

my suggestions for better mpg: slower accelerations from stops, no hard braking, no high revving! basically what they said, drive conservative. it's hard i know...

 

Isnt exaust and intake suppose to HELP, as long as you dont rev to hear the sounds and drive wisely, I thought you were suppose to see an increase in fuel economy. Anyway getting better gas milage as long as you keep your rpm's 2.5 or below you will get some good mpg.

 

tryin to save gas? SIMPLE!!!

hope for a windy day!
put your car in neutral(engine off)
and set up a sail!

infinite miles to the gallon!!! -best ive seen yet!

 

Actually, you'd want to turn off the engine, but keep it in neutral. Then you'd get that kind of MPG

/detail **** :D

 

well when i really wanna save gas i drive real chill and shift at about 2500rpms and go the speed limit on the city streets. i get about a good 320-350 on a full tank of gas.

 

How about this? Do you guys think this works? http://www.metacafe.com/watch/524517...as_mileage_2x/

 

^^ i would have to slap you for even thinking something like that would work....

some of the advice given will work because it's common sense...
but come on.. acetone? mythbusters covered that crap already.

 

Hey I got news for ya - that was a big jump in mileage when he added the acetone - he must have some poor injectors - but it does work that's how I get over 50mpg in my xB and I still have heavy stuff in the trunk. And I don't turn the engine off at lights or while coasting because it burns so little at idle that keeping it warm by running it saves gas more than starting it again. It burns about half a cent a minute and after starting it burns 3-4 time more gas than idle for at least a minute plus starter and battery wear. Acetone doesn't help much at high power output levels in big engines like the one they used on that mythbusters test - it helps best at low power levels when the injectors don't atomize well due to the small injector pulse duration.

 

there have been other posts on the acetone. https://www.scionlife.com/forums/vie...etone&&start=0

I read that the amount used makes a huge difference. Too much or too little and it does almost no good. The gain in a small engine like our scions would probably only be a few mpg. If it were a larger engine the gains would be more noticeable.

 

you won't get infinite mpg cause even our lil 1.5's burn SOME gas on idle. /bigger detail ****

also a ? how big is the tC gas tank?

 

Approx. 14.5 gallons.

 

oh that explains it....I was wondering how someone was talking about getting 310-350 to a tank, and my previous best was 319 on 9 gal....

 

That's exactly why I said you have to turn off the engine

14.5 gallons

 

Actually it works on percentage so if you get a 10% increase on a car that gets 15 that comes out to 1.5mpg were as on a car getting 40mpg that comes out to 4mpg increase and the smaller amount of gas being injected the more it helps. Except on Honda cars apparently it has little or no effect for some reason.

 

Really? I'm skeptical. Please explain how hard braking decreases mpg. Or conversely, how soft braking can improve mpg.

 

hard braking means your coming in too fast on other cars, wasting gas by driving up too close instead of coasting.

 

In a ten mile trip each time I stop from 35-40 mph I loose a couple of MPG from the trip average. On a shorter trip even more. It really is a percentage but the display shows trip average and the resultant drop after accelerating after each stop.

 

The assumption is that if you're hard braking, then you were on the gas for too long.

Get off the gas, kick in the fuel injector shut off, and you'll save gas. The longer you coast (and thus, you wouldn't want to use the brake since you want to extend the range of engine braking as long as possible), the more time the wheels are driving the engine; thus, fuel injector shut off.

Thus, no fuel sprayed. Thus, no fuel used. Thus - better MPG

 

Ah, I see what you mean. I was just thinking about waiting until late to brake, such that you have to brake hard, which doesn't necessarily require staying on the gas longer. So your response makes an assumption, but I guess that's what frostyblizz was thinking, because braking itself would have no effect, which is what I was trying to imply.