Engine, Drivetrain & Forced-Induction Have Technical Questions or Done Modifications to the G35? Find out the answer in here! (View All Posts)
Sponsored by:
Sponsored by: CARiD

Gas mileage! What the ****!!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 21, 2013 | 04:19 PM
  #16  
Deepdiver's Avatar
Registered User
iTrader: (20)
Joined: Mar 2006
Posts: 4,643
Likes: 187
From: So Cal
keep your tires inflated and run Osiris in econo mode..
 
Reply
Old Mar 21, 2013 | 04:21 PM
  #17  
jkuo's Avatar
Registered User
Joined: May 2008
Posts: 393
Likes: 12
From: Atlanta, GA
Do the math; mods are never going to pay for themselves in gas. Say you get a CAI and exhaust. Even if you get eBay knockoff junk that's $400. If it gives you another 2mpg (very generous), and you go through 1 tank a week, how long do you think it would take for payback? If gas is $4 a gallon, it's still over a year. If the mpg increase is a more realistic 1mpg, it's 2.5 years. That's just for payback, not savings. If you buy nicer parts and get headers, you may be looking at north of 5 years.

If you have trouble paying for gas, you can't afford mods. Just keep your car maintained and drive like an old lady. That will give you the biggest savings.
 
Reply
Old Mar 21, 2013 | 05:40 PM
  #18  
manolobleu's Avatar
Registered User
iTrader: (1)
Joined: Sep 2010
Posts: 247
Likes: 2
From: Orlando, FL
^ +1
Also those mods make me wanna floor it every time. Thus killing any increase u get. I took the "drive like a granny" approach and get made fun of but im at $50 a week on 93 and happy with that!
 
Reply
Old Mar 22, 2013 | 09:00 AM
  #19  
DidG35's Avatar
Registered User
Joined: Jun 2012
Posts: 32
Likes: 4
From: Melbourne Beach, Fl
Originally Posted by manolobleu
^ +1
Also those mods make me wanna floor it every time. Thus killing any increase u get. I took the "drive like a granny" approach and get made fun of but im at $50 a week on 93 and happy with that!
$50 a week? You must not drive a ton.

Anyway... to the original post... you'll never recoup money spent on mods vs fuel savings. The G isn't "horrible" on gas, I'm getting about 18-20 mpg, (depending upon driving habits, weight of my foot, highway vs city) which is pretty average for a 6. If I'm on a long trip, all highway, closer to 25-26.
 
Reply
Old Mar 25, 2013 | 12:10 AM
  #20  
Tolboothwilley™'s Avatar
Former G35driver Vendor
iTrader: (37)
Joined: Mar 2012
Posts: 1,081
Likes: 73
From: Las Vegas
Also, don't get mad at others positing opinions on a topic that has been discussed ad naseum in the last 5 years. Before starting a thread, do some reading on the other topics that are EXACTLY like this one.
 
Reply
Old Mar 25, 2013 | 12:58 AM
  #21  
6insomnia9's Avatar
Registered User
Joined: Apr 2010
Posts: 97
Likes: 0
From: vancouver
hahah you think the g is fast...
 
Reply
Old Mar 25, 2013 | 06:58 PM
  #22  
thegreatkwijibo's Avatar
Registered User
Joined: Aug 2012
Posts: 1,486
Likes: 142
From: Highland, Texas
Originally Posted by SavonSuroosh
I need more gas mileage. I had a piece of **** 1990 honda civic before, but it got about 30 to the gallon! Is there any performance mods that would work with my gas mileage a little too?

I heard a math injection would help, as well as a cold air intake, headers and exhaust.
Is any of that true? Any help would be appreciated!
yes please inject some math into your engine I would like to see that
 
Reply
Old Apr 1, 2013 | 04:02 PM
  #23  
slim17265's Avatar
Registered User
Joined: Dec 2009
Posts: 375
Likes: 7
Originally Posted by SavonSuroosh
I need more gas mileage. I had a piece of **** 1990 honda civic before, but it got about 30 to the gallon! Is there any performance mods that would work with my gas mileage a little too?

I heard a math injection would help, as well as a cold air intake, headers and exhaust.
Is any of that true? Any help would be appreciated!
If your tires are worn go one size larger on rear to say 255-45-18, this is .400 larger and will yield you about 2%
have somebody advance your timing initial 2 degrees, and pull out 2 degrees from the top end...I have had this done and power and mileage went up. now getting 27.4 turnpike @ 71mph. cruising slower at 65 I have seen 27.6, there are people here doing even better than that maybe they will chine in.
 
Reply
Old Apr 2, 2013 | 12:30 AM
  #24  
Bill5250's Avatar
Registered User
Joined: Jan 2013
Posts: 12
Likes: 1
Haven't done a single thing to mine yet except for synthetic oil in the engine and considering what the vehicle is I can't complain of the fuel consumption...just took it up north and back again, filled up and calculated the use. combined city and hwy was 29.7( imperial MPG)...had cruise set at 105kmh. Had to crank it up a few times to pass on the road...noticed the fuel computer was doing about 33 US MPG before I hit the towns...can't complain. I've still got fluids to change to Amsoil in the diff and trans...then add some Forte' oil additives for extra friction fighting.
Also guys jack up the car and see how much drag your brakes are doing, most people neglect to clean and lube sliding parts and pins. Rule of thumb for thes are silicone dielectric compound for rubber to metal contact and high temp anti-seize or brake grease on metal to metal contact.sould be able to slide calipers with a finger when they are done right.
No efficiency with these cars when you tramp the gas down all the time...mapped way different than my old Maxima was, that thing got same mileage driven easy or hard...
 
Reply
Old Apr 3, 2013 | 04:17 PM
  #25  
B T's Avatar
B T
Registered User
iTrader: (1)
Joined: Apr 2009
Posts: 358
Likes: 8
From: Mobile, AL
I was getting 22 in the city and 28 @ 80 on the interstate before I started modding, seems like I get better in the city now, but haven't tested. Tuning seemed to have a good effect on mileage. Lowering your idle RPM can also save gas in the city, but unless you have the revup oil pump, I prob wouldn't do it.
 
Reply
Old Apr 3, 2013 | 04:35 PM
  #26  
bluedevils95's Avatar
Registered User
iTrader: (6)
Joined: Dec 2008
Posts: 19,624
Likes: 577
From: Torrance, CA
The only thing i can think of is to free up HP and they are lighter in weight. I have the light weigh pulley now and i am working on the Carbon Fiber Driveshaft. Your engine wont work as hard to move those part and could be better on your gas.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RemmyZero
V36 DIY
10
Apr 23, 2018 11:13 AM
Rinaldi
G37 V36 Sedan 2009 +
6
Dec 2, 2015 05:29 PM
prinny
The G-Spot
6
Nov 22, 2015 11:07 PM
Hogbone
Engine, Drivetrain & Forced-Induction
2
Sep 28, 2015 06:44 PM
wow600rr
The G-Spot
1
Sep 28, 2015 11:50 AM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 07:04 PM.