Fuel mileage improvement

[precision93]

I just bought an 06 G35 coupe auto. What can I change on the car to improve the gas mileage?

[Beancooker]

, are you serious? You can't. Cars come with consumers in mind, not sport enthusiasts. Your car "bone stock" is about as good as it gets for mileage.

Supposedly, a plenum spacer will give you 1-2 MPG more, but I don't know. I installed mine, and I drive with my foot in it quite a bit, so mileage is not relevant.

[zozoka1212]

Best you can do is change your driving style. Believe me. I am among those people with the worst gas milage on this forum. It all comes from my right leg being heavy. Actually it comes from my braincell. Just proved myself yesterday. I went for a long drive and the road was packed. I couldn't push her. I ended up with a huge different. I knew it before I just couldn't believe it. about 6 m/g up from the usual. Hey it doesn't mean I'll do the same at the next trip. As I said it is in my brain(if I have that).

zozo

[Beancooker]

Katy Texas, why does that seem so familiar? Is that where that little girl Jessica fell down the well many years ago?

[zozoka1212]

That was in Midland, Texas.

zozo

[CoppellStereo]

there is a big mall in Katy

[ArEs23x]

I am sorry but when you buy a sports car, the last thing on anyones mind is the gas mileage, if your worried about it, why did you get the "G". Just enjoy your car and dont worry about the lil stuff and have fun driving.

[precision93]

Don't whored my thread with useless comments.If you don't know the answer to a question then don't respond.

The modification sticky lists mods and some of them increase gas mileage. I was just wondering if any other products have the same effect.

Free flowing exhaust increases mileage on many cars, but I read a comment by one individual on this site where it had a negative effect on fuel economy with his G35. This car is new to me, so still have a lot to figure out.
Modified by precision93 at 8:01 AM 9/4/2007

[ugaexploder]

you can try out the "tornado intake system" haha jk

I would think intake would help give you better gas mileage, I would try that out...but I could see it being counter-productive since it will probably soudn really good when you romp it.

When I first bought my G, I was getting 16mpg and now I'm up to 19. I had to get used to the sensitive pedal but I'm usually one of those guys that babies the heck out of my car. I get on it maybe once a week.

[Warpkor]

Driving style sure has an impact on mileage. Given my personal situation with the law, I've been driving my G like a granny. Last tank, I averaged 24 miles to the gallon. Before that, I was averaging around 18 miles to the gallon.

[Q45tech]

Remember manufacturers pay mpg taxes to US government. As such they would often pay gladl $ 750 per car built to any inventor who could increase mpg by just 1.0 mpg. without changing power output.

The greatest fuel wasters is ethanolized fuel which decreases things by a minimum of 3.8% varies to as high as 8% depending on temperature.

If you are an electronics and software genius you could reprogram ecu to lean cruise mixture while pouring nitic oxides out the tail pipe and fail emission testing................ might be worth 1-2 highway mpg. 10% leaner is 10% less consumption.

[fatire_mtb]

Don't whored my thread with useless comments.If you don't know the answer to a question then don't respond.

The modification sticky lists mods and some of them increase gas mileage. I was just wondering if any other products have the same effect.

Free flowing exhaust increases mileage on many cars, but I read a comment by one individual on this site where it had a negative effect on fuel economy with his G35. This car is new to me, so still have a lot to figure out.

Modified by precision93 at 8:01 AM 9/4/2007

I think the point everyone is trying to make is that, yes, there are mods that will have a beneficial impact of some degree to gas mileage. The simple fact remains we didn't buy this car to go the speed limit. Therefore, any mileage increasing mod we make isn't likely to produce actual results due to driving style.

[Gimli G35]

, i didnt feel like posting and getting a I DONT KNOW NOTHING REPLY back ,

Some improvements that you can do ... is .... remove the seats \ lose alot of weight , lighter rims \ tires, basically lighten the car, and

Im thinking that most intake systems will require the ECU to add more gas to equal the air , therefor ... uhh ... decrease gas mileage...

Clean the fuel injectors,

OR better yet!!!! READ THIS!

http://www.ehow.com/how_2629_i....html

[J-Owner]

I have an answer for you. Trade it in for a Prius With comments like that I can tell you already your name will be remembered on this site in future posts. Way to stand out bud!

[precision93]

I have an answer for you. Trade it in for a Prius With comments like that I can tell you already your name will be remembered on this site in future posts. Way to stand out bud!

So I ask a simple question, get replies which do not answer the question, and I can't ask them to stay on topic?

[zozoka1212]

I was thinking to reply on your thread earlier today but that would not go good. Couple of things here went wrong. First of all when I go anywhere I introduce myself nicely. I could be missing it but I did not see yours.

You asked the question and we tried to answer. If you are not happy with negative answer don't ask. People here know more about the G than you. If they tell you the best you can do is change your driving style than I think that's what you should do to get better mileage if you don't like the answer don't follow it. As you said you read thru the Mod. data base and somebody acually had worst mileage after the mod. I had my intake moded. Guess what my gasmileage got worst not because the mod. Because I like the sound of it and I just pushing her even more. I went on a trip yesterday back and for it was a full tank of gas. I had my best gasmileage since I bought the car. It was a long weekend up here in Canada. The road was full I could not play with my car. It was about 6 more m/g than usual. But that doesn't mean it will happen again.

PEOPLE DON'T BUY G FOR SAVING ON GAS. Perhaps the Prius would do it for you as J owner already told you.

What you think people think after this?

Don't whored my thread with useless comments.If you don't know the answer to a question then don't respond.Modified by precision93 at 8:01 AM 9/4/2007

That wasn't verry nice. Was it?

We all tried to tell you all you can do drive it as you drive a toyota and you save gas. If you drive it like the sport car you can put any mods in there won't help you.

I just wanted to let you know what went wrong. So tyou won't think like .

At least you know. I wish you good luck. Also next time if you buy a car do the research Prior buying. So you won't have surprise.

zozo

[USAF_G35_Guy]

Yup, definitely about driving style. But the basics work on the G like any other car though...increase efficiency whether it be air/exhaust/grounding for better spark, plugs, ecu flash for new parts, whatever...all these things can increase efficiency if done right and you have control afterwards. My car can get up to 34ish on the highway on a road trip with cruise control, but on average...in the "real world" of everyday driving I get high teens low 20's and much less than that for around town driving.

The G is most certainly one of the nicest cars I've owned before as far as luxury/sport goes and it's cruise control and VDC systems are probably the nicest I've personally been exposed to for a long period of time. I've owned muscle before and luxury...but this is by far the best mix of both I've owned...and I love it! So ya, it gets much better mileage than the truck I almost bought before it LOL, so I look at it that way haha.

But ya....go with the Scion or Saturn or something along those lines if it's that huge of a deal for ya.....oh ya, and welcome to NICO j/k

BTW, what's the 93 stand for in precision93?

93civic or something? cause you sound kind of like a civic owner

OH YA! I forgot to add....unplug two spark plug wires and run on four cylinders and the gas will get better as well!
Modified by USAF_G35_Guy at 4:56 PM 9/4/2007

[smockers83]

Just as everyone said, you bought a sport car, enough said. you aren't going to be able to really improve mileage much. If driving style doesn't change and you put an intake and exhaust on, sure you'll increase mileage a little, but driving style is highly unlikely to remain the same.

[AFE712]

Hi everybody, first post!

I agree with everybody, and I add this: I'm sure you won't find any modification that improve enough to save money invested. Try yo save 1000 gas... good luck.

But I can understand you smockers83 for being concerned by mileage. That's one reason why I choose de G instead of the RX-8...

[Gimli G35]

hahahah 4 banger Why not do it even further, but i think you might LOSE ga mileage if you do that lol , in consideration of USAF

why not degrade your fuel pump - change your injectors to only do 2-3-4 Cylinders and there ya go ... a fraction of the engine output

[Beancooker]

Don't whored my thread with useless comments.If you don't know the answer to a question then don't respond.

You ask a question, ON AN INTERNET FORUM, expect to have varied answers. As Qtech said, if the manufacturers had a way to increase mileage, while keeping the power output the same, they would.

Sorry I "whored" your thread. Next time I won't be so social, as to ask about where you're from, give you the answer to the best of my knowledge, and hope that the answer itself wasn't whoring your thread too much.

Free flowing exhaust, and an intake will equal less MPG.

An intake without exhaust modifications might give you better mileage, it did in my Maxima, but that was a 3.0l, not a 3.5l.

You can pay for the unichip http://www.unichip.us/ it might get you better mileage, if you don't EVER switch to performance mode.

Put a set of 185/40/18 tires on it. Less tread on the pavement creates less drag, and mileage will increase.

Seal off the gaps inbetween the spokes, so you have a flat faced wheel. That will create less drag. (think Tour de France bicycles)



"Skin" the underside of the entire car. It will keep any air turbulance from entering under the car. (think Lotus Esprit)



Gut the interior.

Never rev above 2500 RPM.

If you have an automatic, do a swap for a manual.

Overinflate your tires. (less drag)

Good luck in your adventure.

[USAF_G35_Guy]

LMFAO!!! to all the above

I'm definitely goin for the solid wheels....those will look bada$$!!!

and then I'll rub my belly button and watch a skinny white boy in a speedo wash em at the local fund raiser car wash ( Dodge Ball )

[J-Owner]

Precision........I couldn't say it better than Zozoka did. With any on-line forum ettiquette is important. A simple rephrase of wording can change the tone of a whole e-mail.

The other many posts on this thread coupled with a search by you of previous posts on this subject should sufficiently answer your question. I do not think there is any other advice to be gained.

There are a lot of intellegent and knowledgable people who responded and Q45's advice was dead on. I hope the information in this thread helped you out.

[BigWill]

Put a set of 185/40/18 tires on it. Less tread on the pavement creates less drag, and mileage will increase.

Seal off the gaps inbetween the spokes, so you have a flat faced wheel. That will create less drag. (think Tour de France bicycles)

"Skin" the underside of the entire car. It will keep any air turbulance from entering under the car. (think Lotus Esprit)

Gut the interior.

Never rev above 2500 RPM.

If you have an automatic, do a swap for a manual.

Overinflate your tires. (less drag)

Good luck in your adventure.

Basically, a Prius?!?! lol

Hey guys... ya think precision93 will be waving at another G owner anytime soon?

Oh, sorry, wrong thread.

[zozoka1212]

He'll trade his G for a motor scooter.

Sorry I whored your thread precision93.

zozo

[ArEs23x]

I was thinking to reply on your thread earlier today but that would not go good. Couple of things here went wrong. First of all when I go anywhere I introduce myself nicely. I could be missing it but I did not see yours.

You asked the question and we tried to answer. If you are not happy with negative answer don't ask. People here know more about the G than you. If they tell you the best you can do is change your driving style than I think that's what you should do to get better mileage if you don't like the answer don't follow it. As you said you read thru the Mod. data base and somebody acually had worst mileage after the mod. I had my intake moded. Guess what my gasmileage got worst not because the mod. Because I like the sound of it and I just pushing her even more. I went on a trip yesterday back and for it was a full tank of gas. I had my best gasmileage since I bought the car. It was a long weekend up here in Canada. The road was full I could not play with my car. It was about 6 more m/g than usual. But that doesn't mean it will happen again.

PEOPLE DON'T BUY G FOR SAVING ON GAS. Perhaps the Prius would do it for you as J owner already told you.

What you think people think after this?

That wasn't verry nice. Was it?

We all tried to tell you all you can do drive it as you drive a toyota and you save gas. If you drive it like the sport car you can put any mods in there won't help you.

I just wanted to let you know what went wrong. So tyou won't think like .

At least you know. I wish you good luck. Also next time if you buy a car do the research Prior buying. So you won't have surprise.

zozo

Thats a smart man for you lol... I wasnt expecting to go on the defensive until you got all crazy about my harmless reply haha, have fun driving your beautilful car we all love and never buy a sports car and worry about improving gas mileage, the second I bought my car, gas mileage never crossed my mind once. If you truly love your car, your willing to pay that extra couple hundred or whatever dollars a year.

I dont know whether anyone has ever asked this in the past, maybe they have or havent, but since were on the subject im going to ask lol. Is there any major difference between SHELL, CHEVRON, OR COSTCO GAS. I honestly thought they were all the same, when I told my racer enthusiast co-worker I used costco gas, he told me is wrong with you lol...cuz he said it was cheap gas, is there any major difference lol..Cuz costco gas is like .20 cents cheaper then anything in my city right now haha..but if chevron or shell truly are better..i dont mind paying more...Thanks

BTW: Precision93..I think you need a nap lol..were only here to help you not put you down..these guys are great..some of them will have different opinions, but its okay because you want blunt truth. Welcome to Nico by the way..you started off just great haha

[zozoka1212]

To be honest I have no idea. But IMO not much.

zozo

[telcoman]

precision93

The G35 is a great vehicle and the best car I've ever owned and I've been driving for over 40 years. You can get decent gas mileage by driving with a light foot. With almost 40k miles on my 06 G35 I rarely shift over 3k rpm and use cruise control whenever possible on my daily 100 mi commute. I generally average 24 MPG and have gotten almost 29 MPG on a trip to Florida. I use regular 87 octane gas, whatever is cheapest, tire inflation pressure is 35 lbs on all four tires when cold. I use 5w-30 Pennzoil that I buy on sale at Pep Boys and change it ervery 3000- 3500 miles. I just changed my air filter & with only 11k miles on it I could not believe how filthy it was. As you have already seen, there are many strong opinions on this site on just about everything. so you can read them all and make up your own mind. Hope this helps?

Telcoman

[precision93]

I'm used to seeing free flowing exhaust, CAIs, and upgraded ignition improving performance as well as fuel mileage.

I was suprised to see exhaust hurting mileage. Is it possible that the factory setup is tuned so if you change it you lose efficiency? It just seems natural that a less restrictive exhaust would be more efficient.

I have a car I race, but I need a daily driver so I bought the G. I want to mod it, but with driving 80 miles a day, I can't do it if it will have a negative impact fiuel cost. Everyone has their own reasons for buying the G. It is obvious why I would rather be driving the G than a prius. I am trying to have the best of both worlds, and like everyone else, I want more.

Is anyone using an aftermarket ignition, or is the factory already hot enough? (MSD, Mallory, Crane?)

How critical are custom tunes? Can the factory ECU be reprogrammed or is a piggyback unit needed? What is everyone using?

[J-Owner]

Sorry to get off subject again, but to answer Ares23x's question there is a difference in places you get gas.

First let me say do not EVER buy gas from Citgo. There is nothing wrong with the actual gas, but one of the major stockholders in Citgo is Hugo Chavez and the country of Venezuela. I personally think we should assassinate him so sorry to put my political $0.02 in there.

I use to buy gas from QT for a brief time until I had to spend $200 having something done (it has been so long I forgot what they did to fix it) anyway, there was water in the gas and I could tell something was wrong. I have found that lower end places like that don't always have quality gas.

I typically always use Shell/ Chevron, or Exxon, yes I am temporarily using Exxon because at the moment between Shell and Exxon by my work Exxon's premium is cheaper at the moment. Trust me I am not happy about contributing to Exxon's $12 Billion dollar quarterly profits.

I also use Murphy Oil, which is who Wal-Mart uses for their gas in my area and because I am a 15+ year stockholder of Wal-Mart I go there often. The fact that one of the owner's of Murphy Oil's son was one of my fraternity brothers in college probably has something to do with me buying there as well as they are the supplier.

Sorry...I got off track. As far as Costco gas I have no idea why that would be bad.....I have co-workers who use that and they have never complained. I think you are fine. Because I had a bad experience with QT (QuickTrip) I would say stay away from them if you have them.

I can say from experience lending on gas stations, if you get gas from a junky mom and pop place that looks run-down I would be concerned. If they don't take care of their building and property they probably do not take care of their tanks and no telling what is in the tanks. These are just things I look for in places to get gas that are not my usual stops.

Again just my $0.02.