LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Better mpg?

Thread Tools
 
Search this Thread
 
Old 11-03-2011, 12:05 PM
  #1  
Staging Lane
Thread Starter
iTrader: (1)
 
badata's Avatar
 
Join Date: Apr 2005
Posts: 76
Likes: 0
Received 0 Likes on 0 Posts
Default Better mpg?

Hey guys recently I was getting 17 mpg. Cleaned out intake tb and found my maf was backwards. Now I'm at 18. Any mods that would improve mpg? Any body get results with a tune? Or am I never going to see any better?
Old 11-03-2011, 12:31 PM
  #2  
TECH Resident
iTrader: (1)
 
Sittingmongoose's Avatar
 
Join Date: Sep 2008
Location: Philly
Posts: 898
Likes: 0
Received 1 Like on 1 Post
Default

if you do a cai and exhaust you will see a big gain in mpg. I was at like 37mpg on the highway with those two mods. In most cars if you do those two mods, you will see a 3-8mpg gain depending on the car.
Old 11-03-2011, 01:03 PM
  #3  
TECH Addict
iTrader: (5)
 
94ss06gxp's Avatar
 
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes on 0 Posts
Default

ive been getting 18.2 average with a tune (DoD disabled), catback, and airbox mod. That is doing 80% city driving.
Old 11-03-2011, 01:21 PM
  #4  
TECH Fanatic
iTrader: (5)
 
vroom_vroom's Avatar
 
Join Date: Nov 2010
Location: vegas
Posts: 1,161
Likes: 0
Received 1 Like on 1 Post

Default

18.7 with no dod, fwi and a tune and I am always in it
Old 11-03-2011, 01:55 PM
  #5  
Launching!
 
spydog's Avatar
 
Join Date: Jul 2009
Location: green bay
Posts: 247
Likes: 0
Received 0 Likes on 0 Posts

Default

i get 22 mps stock excep for K&N air filter
Old 11-03-2011, 06:03 PM
  #6  
Staging Lane
Thread Starter
iTrader: (1)
 
badata's Avatar
 
Join Date: Apr 2005
Posts: 76
Likes: 0
Received 0 Likes on 0 Posts
Default

looks im just about average. maybe a few more mpg with a tune. Kinda weird you guys are getting that without dod. Ill start looking into a tune
Old 11-04-2011, 07:54 AM
  #7  
TECH Fanatic
iTrader: (5)
 
vroom_vroom's Avatar
 
Join Date: Nov 2010
Location: vegas
Posts: 1,161
Likes: 0
Received 1 Like on 1 Post

Default

Dod only offers a 18% fuel savings according to gm
Old 11-04-2011, 08:48 AM
  #8  
RKO
Staging Lane
 
RKO's Avatar
 
Join Date: Dec 2010
Location: Buffalo, NY
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by vroom_vroom
Dod only offers a 18% fuel savings according to gm
Ha you make it sound as if an 18% claim is tiny. I'd invest in any tech that gives 18% fuel increase... Although i've seen more of dod ofering about a 7% increase.
Old 11-04-2011, 11:01 AM
  #9  
TECH Enthusiast
 
SSCoop's Avatar
 
Join Date: Jan 2010
Location: Sicklerville, NJ
Posts: 646
Likes: 0
Received 0 Likes on 0 Posts
Default

you guys are making me want to get a tune and disable DoD real bad lol
Old 11-04-2011, 12:06 PM
  #10  
TECH Enthusiast
 
Ill_Born_ss's Avatar
 
Join Date: Nov 2008
Posts: 622
Likes: 0
Received 1 Like on 1 Post
Default

The maintenance cost alone of having the DoD/AFM active, far out weighs the possible 7-18% gain in fuel economy.... plug life shortened, excessive oil consumption, dirty induction system and a really dirty internal engine.

BEG, BORROW< STEAL for a way to have it disabled. Then do an oil change with oil for a desiel engine for 500-1000 miles, and then clean all of your induction system and a fresh regular oil/filter change... then be a happy camper!
Old 11-04-2011, 06:02 PM
  #11  
Staging Lane
 
TheBlizzard's Avatar
 
Join Date: Sep 2011
Posts: 87
Likes: 0
Received 0 Likes on 0 Posts
Default

I avg 20.5 in a 50/50 mix of hwy and city driving, and I don't baby the car either, but I don't beat on it. On the hwy I get an avg of 30.3 and my car is an 08 and is all stock. I am going to build my own CAI and get a DP & cat back in the spring so hopefully that will help even more.
Old 11-04-2011, 06:12 PM
  #12  
TECH Enthusiast
iTrader: (2)
 
95batmobile's Avatar
 
Join Date: Mar 2011
Location: Salisbury MD
Posts: 602
Likes: 0
Received 0 Likes on 0 Posts
Default

most bolt on's will give you better MPG like KAI, exhaust, headers, Tunes..... but at the same time they will decrease your mpg.... ill explain

lets say you have intake/exhast, while cruising on the highway your engine will not have to work as hard to suck in the air and blow it out. so you will have a better performing engine and you will increase your mpg.... but as soon as you get on the throttle pretty hard your engine will be able to move more air in and out and this means it will need more fuel to keep up with this increase air flow... which results in a loss of mpg....

so its a balance. i had a full bolt on car for a long time and the mpg actually dropped a little because of "spirited" driving... and the best thing i did do for mpg was switch to 0w 30 amsoil... gave me around 3mpg if you can believe that
Old 11-04-2011, 06:15 PM
  #13  
TECH Apprentice
iTrader: (2)
 
WS6SP33D's Avatar
 
Join Date: Sep 2010
Location: QuarterMile, KY
Posts: 321
Likes: 0
Received 0 Likes on 0 Posts
Default

Thats seems pretty average compared to what i usually see or work on. Only other mod i can think of is the keep your foot out of it mod lol.
Old 11-04-2011, 06:16 PM
  #14  
Teching In
 
18purdue69's Avatar
 
Join Date: Oct 2011
Location: Indianapolis
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default

Anyone check their mpg highway with dod then with it disabled? I see sometimes about 29 mpg with dod highway.
Old 11-04-2011, 06:50 PM
  #15  
TECH Addict
iTrader: (5)
 
94ss06gxp's Avatar
 
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by 18purdue69
Anyone check their mpg highway with dod then with it disabled? I see sometimes about 29 mpg with dod highway.
at 70mph i see about 25ish with dod disabled and at 75mph i see around 23ish
Old 11-05-2011, 11:52 AM
  #16  
TECH Fanatic
iTrader: (5)
 
vroom_vroom's Avatar
 
Join Date: Nov 2010
Location: vegas
Posts: 1,161
Likes: 0
Received 1 Like on 1 Post

Default

You could not pay me enought to run 0w oil in my car
Old 11-05-2011, 05:38 PM
  #17  
TECH Enthusiast
iTrader: (2)
 
95batmobile's Avatar
 
Join Date: Mar 2011
Location: Salisbury MD
Posts: 602
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by vroom_vroom
You could not pay me enought to run 0w oil in my car
yea that makes sense... cause if it is the oil fault then Amsoil will pay for your new engine and the install....
Old 11-05-2011, 07:45 PM
  #18  
TECH Fanatic
iTrader: (5)
 
vroom_vroom's Avatar
 
Join Date: Nov 2010
Location: vegas
Posts: 1,161
Likes: 0
Received 1 Like on 1 Post

Default

you have to beat it out of the dealer to get anything done to our cars im sure it would be even more fun from an oil company. how many "race cars" drag cars or what have you not do you see running 0w oil. but this is for a new thread not to keep hijacking this one sorry for the side track



Quick Reply: Better mpg?



All times are GMT -5. The time now is 10:51 PM.