Top three mods to increase fuel efficiency (mpg)?

[jjohan35]

Hi there,

I'm interested in knowing what are the top three mods (in your opinion) that would boost fuel efficiency (mpg)? I don't care too much about boosting power, but that can be a bonus too. Main priority is boosting mpg on an already fuel efficient car.

Thanks.

[NewbTuner]

Driver better, dont vtakkkk :)

[jjohan35]

I know that already. I'm talking about mods for the car, not for the driver. ;-) Looking at pointers for my first mods.

[mattsbobo]

Dilithium Crystals, Hyperdrive, or a Flux Capasitor would probably help out a lot.

Or you could do what NewbTuner said, and don't Vtak so much. I drive my Si pretty conservatively, and probably get much better gas milage over other Si owners.

Maybe you should have bought a Civic Hybrid.

[jonesthewine]

1) The most important thing to mod is your mindset...think slow and steady...cars are most efficient around 35-45 mph.
2) Run tire pressure at high end of safe range and get into top gear ASAP.
3) Search threads on MPG by Janizary, the resident MPG research guru.

Do you have R18 or K20 engine? AT or MT?

[acetylcholine]

Originally Posted by jjohan35

Hi there,

I'm interested in knowing what are the top three mods (in your opinion) that would boost fuel efficiency (mpg)? I don't care too much about boosting power, but that can be a bonus too. Main priority is boosting mpg on an already fuel efficient car.

Thanks.

Mileage with I/H/E? Hondata?

I posted a similar question but i did it from the other way around. I asked the guys what kind of mileage they got with Intake, Header, and Exhaust mods, as well as some others.

Should be a good start: they got decent mpg increases b/c of the better-breathing engines.

[turktech]

pullies really helped my mileage

[GeezerSi]

Originally Posted by NewbTuner

Driver better, dont vtakkkk :)

Originally Posted by jjohan35

I know that already. I'm talking about mods for the car, not for the driver. ;-) Looking at pointers for my first mods.

True, but he's right. Driving habits are a big factor.

Maybe a Scanguage would help you by monitoring your mileage while you drive... instant feedback.

[iomatic]

More discussion here: OK, one more: fuel efficiency mods vs. performance

[aki]

Driving habits is number one. Look up hypermilling on the internet for some tips.

[habitat]

Opps double post

[shutter13]

NST pulley kit, lighter wheels, k&n drop in airfilter

[habitat]

1. Reduce weight of car
2. Buy thin tires/medium sized rims (195/55/R16 instead of 245/40/R18)
3. Utilize a manual transmissions ability to cruise (not cruise control, more like rolling down a hill in neutral)

[sleeperone]

trading your Si for a dx would surely help !!!!
lol - kidding, get an aftermkt intake, you will gain some mileage 5-7 mpg's avg.

[Litlelev]

Originally Posted by sleeperone

trading your Si for a dx would surely help !!!!
lol - kidding, get an aftermkt intake, you will gain some mileage 5-7 mpg's avg.

5-7 mpg!!!? Thatd be awesome but i think its much lower.

Like others have said your best bets are lighter wheels, pulleys, and probably scangauge to monitor efficiency

[kamil2004]

yea intake shure does help but not this much maybe 1- 3mpg

[c130turboprop]

buy a geo metro, u can get em for a few hundred dollars, lol.....

[aki]

Intake decreases MPG, since it's putting more gas to compensate for increased airflow.

[c130turboprop]

Originally Posted by aki

Intake decreases MPG, since it's putting more gas to compensate for increased airflow.

WRONGO BUDDY!!!!!!!!!!!!!!!!!! they do to give u better mileage because you are adding more air, not fuel, for a more complete burn of the fuel injected to the piston. burning more of the fuel makes the engine more efficient, thus increasing your mpg, because the engine is burning all the fuel allowing the engine to not work as hard to create the power. your always gonna have the same amount of fuel going to the pistons, unless u decided to install bigger injectors when u installed the intake....

[Jardiniboy]

TB spacer + 2 gaskets. Lighter wheels.