Thread: Uber MPG Cobalt
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Old 07-01-2011, 01:45 AM   #15 (permalink)
Fr3AkAzOiD
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Join Date: Jul 2008
Location: Raleigh, NC
Posts: 259

Cobalt XFE - '08 Chevrolet Cobalt XFE
Team Chevy
90 day: 41.1 mpg (US)

'05 Malibu V6 Tow Vehicle/Track Car - '05 Chevrolet Malibu LS V6
90 day: 23.12 mpg (US)

'08 XFE average for 2013 - '08 Chevrolet Cobalt XFE
90 day: 41.1 mpg (US)
Thanks: 41
Thanked 25 Times in 20 Posts
Quote:
Originally Posted by rmay635703 View Post
Now I have to learn from you, the best I can do was 52mpg.

What conditions were there?

What speeds did you drive and what techniques did you employ?

What distance is your average trip?

How much throttle and what gears do you use at different speeds?

I would like to try and replicate your driving technique on my 010 cobalt.

I have gotten 70+mpg on the trip meter a few times on short trips were the motor was already warm and I could basically slide back home P&G at low speeds.

Thanx
Ryan
Ummm...wow

First the question you didn't ask....mods.

Shim kit in rear and front alignment to bring the car close to 0 toe.
Broke in my new tires this winter, Michelin Energy Saver A-S in stock size running at 44 PSI cold.
Partial grill block, I blocked off above the bowtie, and the lower grill leaving the center open.
Mudflap and FM antena delete.
Mobile 1 Advanced Fuel Economy oil. Only helps a smidge but figured I'd list anyway.


My trip to work is 35 miles each way.
Start in town and drive back county roads through farms to another town. 45 and 55 mph limits and 15 traffic lights. I usualy catch less then 1/2 those lights and have gotten good enough at memorising the pattern that I usualy only get suprised by 1 each way and the rest I know I'm going to hit and EOC up to them and time them so I only get down to 10 - 20 mph instead of a full stop.

Being North Carolina it's in the low 80's to mid 90's this time of year depending on time of day and we havn't gotten much rain at all this year.
Here is where I sound crazy, windows up, circulation fan on max, only turn on A/C if my flesh starts boiling and even then I cycle it on and off.
I also turn my daytime running lights off even though thats probably only good for 0.25 mpg improvement.

Started this tank just before Memorial Day weekend and there was no traffic.
I P&G with EOC, pulse in 5th gear, 100% throttle to 52 mph, glide down to 38 mph.
If a car comes up from behind I keep a steady 45 mph (5th gear) untill they pass. If the locals don't understand what a passing zone is and a line starts forming I'll speed up to 50 or 55.

When I accelerate from stop I give full throttle (except 1st, peeling out is not very fuel efficient) through each gear and shift at about 2,200 rpms.

Just keep in mind this 700 mile tank that averages 59.5 mpg was me pushing for a personal record and isn't what I usualy get. The tank right before that one I had 48.9 mpg and the one after my 700 miles one I got 53.8 mpg.

Though I did just do 420 miles on 7 gallons this week.

I may be developing a problem. :\
Is there such a thing as ecomodders anonymous?
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