timi

with all my mods my mpg hasn't increased 1 single frickn gallon. and i'm asking myself why i'm waisting my money on 93 octane. i'm on my 3rd tank of gas now. the first tank 93 no change so i went down to mid grade, no change, no pinging, now back to 93.

wondering if i'm rich or lean, would that make a difference. i'm not really driving any harder now then before the mods.

what gives?

mustang_montana

im not quite sure i follow. so youre dissapointed your mpg hasnt increased? 93 octane wont make a huge difference except about 30 extra cents pergallo. as for increasing you gas mileage, most of your mods are intake related so figure that the more air you add the more gas will be added to compensate.

timi

it's just that if you read every mod out there, cai, catback, t/b, especially tuner, they all say will improve gas millage and horse power. i'm not sure how of an increase i've got (havent dyno checked it yet=money) but the car is supposed to breath better now, right? which should = more efficient, right? or am i hopping for too much?

96cobra10101

um, okay. If you want gas mileage go get toyota. I am lucky if I get 200 miles to a tank and I can only use 93 or better. Oh, and I am happy with it. What next, save the whales and trees?

mustang_montana

yeah being blown is bitter sweet. as for mods increasing mpg, usually thats a load of crap. it may be improved slightly from the intake stuff but if youre doing tons of mods your gas mileage will get worse, with your mods you probably got a minor increase in mileage but i wouldnt take any of those aftermarket companies' word for it.

GodAmGT00

It is possible to get slightly (SLIGHTLY) better gas mileage w/ some mods, since your engine isn't having to work as hard to do as much...


The problem is, More Mods = More Right Foot...

A good, and commonly overlooked mod that will generally help out w/ gas mileage is lightening your car.... Toss the back seats, carpet, sound-deadening material, lighter rims, lighter suspension, race seats etc....



JT

SXGT

300 miles on a full tank is possible if you keep it under 2000 rpms. me and fe wothers have done it. If you dont have a 93 octain tune your throwing your money away by buying the 93

BBond007

keep in mind that after you re-program or reset the computer it takes several tanks of gas before the computer rebuilds its strategy...

The exhaust mods will help you... at least they helped me...

BBond007

2000 seems a bit low to me. I’d say 2500.

Shifting at 2K is lugging the engine.

For maximum efficiency shift at 2500 and drive with the AC off and windows cracked just a few inches.

I made about 240 miles on 7 gallons of gas (Miami –> Orlando) and I was going around 70, never over 80 (for long, you know passing people and stuff).

In town, in this traffic, I may see 18mpg but more typically 15mpg.

2000GT4.6

This is another one of those myths that I have no idea how it got started.

It doesn't take your computer any time to "learn" anything. There isn't anything for the computer to learn anyway.

You can take a car, install a blower (or any mod), download the tune, and mash it to the floor on the very first start (after the mod) and so long as the tune is dead on it will not get any better with time.


With just basic intake/exhaust mods, IF the tune is still dead on, and IF you can keep your foot out of it you should pick up a small amount of MPG, simply because the car is making more power and doesn't have to work as hard.

With your diablo tuner though I would not expect gains. My mail order tune from diablo was making the car to rich, so I acutally lost MPG and power.