So I've never had a DIC before. (yeah bring on the jokes ) And I've started getting obsessed with trying to get my mpg as high as possible to and from work. Really kills the time on a 45 min commute. Anyway.. the best I've done so far through a half tank is 37.1 mpg. 65% backroads 35% highway. Anyone else do this? Am I alone here? Am I the mpg champion? Any challengers? lol

 

shift lower, dont go higher then 3000rpms & see what you get

 

Yeah sometimes I go too far and really bog out the car. I'll keep experimenting. One thing I do know..While coasting..neutral is my friend. Good thing I leave for work when the roads are basically empty. I've come to a crawl in a couple of places.

 

its not safe to leave your car in neutral, no power to the wheels in an emergency...

try just leaving it in gear w/ the clutch engaged just incase

 

My friends just went to school for automotive where I go and I asked the same thing for MPG and coasting. There are a bunch of big mountains on my way up to school when I make the trip and I usually coast down them, I can coast a couple minutes sometime, pretty nice. Anyhow, in their one class the teacher told them you will get more MPG if you leave it in gear because when you are coasting down hill and leave it in gear it cuts the fuel off, throttle body is closed. When you are idleing down the hill the injectors are still spraying. I still think its better to coast because that is less strain on the motor. That trip to school is the only time I ever coast usually.

 

I've played this game before. Especially on long drives.
I can always bump up the MPG by about .1 pts by painfully slowly up to about 70 mph, and then coasting back down to 50. Rinse and repeat.
You also get crazy good gas mileage by drafting off of a big truck, and they usually travel around 60-65 mph in the right line, which is just above the optimum speed for mileage in a cobalt.

 

So far I have only driven in the city, I am within break-in mileage, and the car is telling me I am averaging 25mpg. Once I start going through interstate I am sure that could go up by atleast 10mpg.

 

Ahh.. the only thing I need to worry about at that time is deer. I would prefer to use the brakes in that situation. Speaking of which.. I encountered this dog in the middle of the road last night. His tongue was hanging out and was just standing there looking as happy as can be. As a matter of fact I would say he was staring at my car like it was a giant milk bone. After evasive manuvers that dog lived to see another day. Without those eibachs installed I really feel a tree I would have met. If you read this Eibach..free advertising! Why don't throw me a bone Anyhow.. I understand what your saying and I do appreciate the concern Soldier.

Thats interesting..a new angle to try. Thx

 

I play the MPG game on long drives...

best Ive done was 65mpg on flat open highway with a decent backwind.

(at 85mph)

 

39mpg on a 100% highway trip (300 miles round trip) with all mods listed in signature
(mpg goes up with dyno tuning)

 

It's nice to see im not the only dork here jk And that drafting idea is just priceless!!

 

better than mine i get 33.8-34.5 mpg

 

TNT and chevysales - Wow.. ok so im not the champ.. Just going to have to bring my A game. Time to take out the back seats


It's the ground effects. Look great but their killin ya

 

Still in break-in and 100% factory stock 2.4L NA Auto 2007 SS Coupe - 29.7 MPG mostly interstate 150 mile round trip between Bloomington and Springfield Illinois using CruiseControl for acceleration above 35 MPH to 65-69MPH (Interstate). Also was using 87 Octane / 10% Ethanol gasoline....

 

when I had my balt, totally stock 2.2 5 speed coupe, I went on a 4 hour trip and averaged 39.1 mpg with the cruise set at 77-78. It was good bc it was slightly downhill 90% of the way there, and i never had to adjust speed at all, just kept changing laves lol. In the cav i average right around 30 (28-33) with 50/50 highway/city, and it depends on how I feel like driving. i get around 28 on the weeks that I think I am going to the track bc I start practicing my launches and powershifts lol.

 

You should be using 91+ octane with no additives, aren't you?

 

I'm not a 2.4, but my DIC is currently displaying 31.7 mpg.
I do mostly highway driving.

 

If your car is like mine, the cruise control goes straight to Half/WOT to increase speed. Instead of trying to gradually increase speed first.
I would accelerate manually, and slowly.

 

I messed around on a 90 mile trip one time and got 42MPG. I don't know how close it actually was. Averaged 60mph

 

OK i gotta ask this of all the posters on this thread.......Are you people calculating your mileage using US gallons or Imperial gallons????.....it makes a huge difference....i have always used Imperial gallons as a calculator and i average about 28-29 city and have gotten 42 MPG on the highway with a 2.4 auto with GMPP exhaust and K&N air filter as my only mods......if i was to use the US gallon to calculate it i would be sitting at 23 city and 35 hiway which is really discusting to think about.....any replies would be great......Later

 

You are correct. For MAX performance I should have been using 91 Octane. But at the time I was going on what my dealer-owner / High School buddy told me I should use and NOT what the Owner's Manual says. The car still has under 1800 miles on it and I'm just driving around town to empty the tank of regular.... I'll be let it get down to almost empty, put four gals of 91 in it and run it down, repeat, then fill with 91.

Gary - http://www.csm-gh.com

 

I'm getting 32mpg with the mods below and 260whp. Not the best, but I think good considering the larger injectors and power.

 

I slowly accelerate to 35 then SET the Cruise Control, then slowly tap the RESume (+) button to get up to the desired speed without causing a downshift or half throttle increase.

Gary http://www.csm-gh.com

 

do they have this game for xbox 360?

 

I havent reset my mpg in 2k miles and i am getting 29 dead on..... driving slowly.
I drive 60/40 hyw/city, use cruise when possible and never move faster than 70 mph.

p.s. i would draft trucks but i am afraid of getting more paint chips and scratches.