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post #1 of 25 (permalink) Old 05-31-2008, 10:13 PM Thread Starter
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Hypermiling mods!!

Since gas prices have gone so high I believe its time to start looking into mods and hypermiling tecniques.

I know the doors of the cobalt are really heavy does anyone know what kinda changes you can make to that? any other weight reductions?

What about mods for boost your milage?

Here are some tecniques ive learned:

-Fill tires to max
-use mobil1 0w-30
-drive the speed limit
-act like there are no brakes
-take it easy going uphill and glide when going down
-put car into neutral and shut it off at lights

06 LS - Weapon R intake, Bucket seats, 4 point harness, 17" rims with Hankook racing tires, Blacked out headlights, Blacked out sparkplug harness, soul power decal.

~soon to come: ss fiberglass spoiler
dc strut bar
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post #2 of 25 (permalink) Old 06-01-2008, 06:07 AM
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?Shut it off at stop lights.. are you crazy?!?! starting your car uses so much gas. i read that starting your car uses as much gas as letting your car idle for 30 mins.

use cruise control often

2007 Black LT coupe
35% Tint all around - Completly debadged - Side Moldings Removed
KICKER ZX 650 RMS interior amp - KICKER ZX1000 RMS Sub Amp
1 KICKER 12" L7 - All new pioneer interiors - Pioneer Avic Z2 W/ GPS
Rockford 1 Farad capcitor - Trunk, Doors, and Rear deck Dynamated - PS2 with guitar hero
Blue footwell neons - Two Alpine type S Tweeters

Engine mods:
K&N air filter
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post #3 of 25 (permalink) Old 06-01-2008, 10:38 AM
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yep it takes alot more power to start the car than let it idle for a while ...its not worth shutting it off unless you are in like stand still traffic on a highway for a while



Mod's So Far: AEM CAI, C.A. Header, 2.50 Magnaflow Catback Exhaust , ZZP Catless Downpipe, DC Carbon Strut Bar, Dropped on Progress Springs. Tinted, Fully Debadged, Custom front SS bumper,2 Audiobahn 10" w/JL amp, Lower Billett Grille, Sengen 18 x 8 rims wrapped in Capitol Sport UHP 225/40/18.

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post #4 of 25 (permalink) Old 06-01-2008, 11:37 AM
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not thirty minutes worth tho only like 10 tops... ever watch mythbusters...?

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post #5 of 25 (permalink) Old 06-01-2008, 12:07 PM
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i have heard that on new cars start up is equivalent to idling for 60 seconds. 30 minutes?? Not so much..



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post #6 of 25 (permalink) Old 06-01-2008, 05:38 PM
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idn im 18, it was only a year ago i was in drivers education, and thats what was in the book. Who knows could be a old book.

Just relaying what ive heard. But still you shouldnt shut your car off at a red light.

2007 Black LT coupe
35% Tint all around - Completly debadged - Side Moldings Removed
KICKER ZX 650 RMS interior amp - KICKER ZX1000 RMS Sub Amp
1 KICKER 12" L7 - All new pioneer interiors - Pioneer Avic Z2 W/ GPS
Rockford 1 Farad capcitor - Trunk, Doors, and Rear deck Dynamated - PS2 with guitar hero
Blue footwell neons - Two Alpine type S Tweeters

Engine mods:
K&N air filter
^^^RIP^^^
2006 TBSS!
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post #7 of 25 (permalink) Old 06-01-2008, 05:58 PM
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Quote:
Originally Posted by xyankees214x View Post
idn im 18, it was only a year ago i was in drivers education, and thats what was in the book. Who knows could be a old book.

Just relaying what ive heard. But still you shouldnt shut your car off at a red light.
maybe you read 30 seconds, because there is no way its 30 minutes. Not even on a V8.

I do agree with you about not shutting it off at a light though. On average your only stopped at a light maybe 30 seconds. But if you are waiting in line at the drive through, then it may be a good idea to shut it off.


More good ways to save gas:

Shift when indicated by your shift light
Slowly acclerate from stoplights
An intake and exhaust CAN help you get better mileage but most people see worse mileage. The reason for this is when people get there new intake or exhaust they are inclined to hit the gas a bit more. But if you can keep your driving habits the same it would help.



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post #8 of 25 (permalink) Old 06-01-2008, 06:34 PM
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Quote:
Originally Posted by unkerns View Post
Since gas prices have gone so high I believe its time to start looking into mods and hypermiling tecniques.

I know the doors of the cobalt are really heavy does anyone know what kinda changes you can make to that? any other weight reductions?

What about mods for boost your milage?

Here are some tecniques ive learned:

-Fill tires to max
-use mobil1 0w-30
-drive the speed limit
-act like there are no brakes
-take it easy going uphill and glide when going down
-put car into neutral and shut it off at lights
Fill your tires to the max is a HORRIBLE idea. Fill them to the recommended level and that's it. make sure they are all the same and if you really want fill them with nitrogen. It will help a little. Were talking 1% gain max.

Synthetic will help, you don't really need 0 weight though. In fact it might be a little too light for a daily driven non performance car. It won't hurt but 5W-30 is just fine.

If in a manual, engine brake your heart out. When you are engine braking the injectors stop injecting which saves you a fortune in gas. For those with an interceptor put it on the instant fuel economy setting and engine brake. Watch it go off the charts.

Don't shut the car off. While shutting it off will help a little for long periods at lights it's pointless and you are putting extra wear on the engine, cooling and ignition system by continually stopping and starting it.

I can't speak for GMs direct injection system but I know BMWs has crank, cam, and other sensors that allow the car to uses a very minimal amount of fuel on start up. Literally you hit the key and it starts because the system finds which cylinder has the best conditions for ignition and it first fuel into it only until the car starts. It's pretty cool. I would imagine the other auto makers are hot onto that system as well.

A big key to better fuel economy is weight. Lose as much as you can. Take out the crap in the trunk, your cds, the rear seats and brackets, subs etc etc. Hit the gym if you are hefty like me. Every lb you shed from the car equals better economy.

Repopulating yourcobalt.com one post at a time.

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post #9 of 25 (permalink) Old 06-01-2008, 08:01 PM Thread Starter
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Theres another site im researching called cleanmpg.com

thats where I found some of these are the hypermilers weve been hearing about on tv.
The 2 highest recommendations were the max on tires and 0w-30.

I have filled up my tires to max and its made a drastic difference, I just dont know where to get 0w-30.

Can anyone tell me how to get rid of some serious weight in our cobalts? I know theres alot in the doors alone.

06 LS - Weapon R intake, Bucket seats, 4 point harness, 17" rims with Hankook racing tires, Blacked out headlights, Blacked out sparkplug harness, soul power decal.

~soon to come: ss fiberglass spoiler
dc strut bar
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post #10 of 25 (permalink) Old 06-01-2008, 08:25 PM
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There's really not much you can do to lighten up the doors without sacrificing safety. (especially on the coupe) There is a thick metal bar that runs through it to protect you from impact.

As for other weight redux, you could remove your spare tire. (I wouldn't unless i had roadside asst.) back seats?



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