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Bad gas mileage; 08 civic Si

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Old 08-13-2013, 06:42 PM
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Default Re: Bad gas mileage; 08 civic Si

Originally Posted by duckmanEG
Only issue I see with this old thread is this guy is abusing his Si by not going into VTEC. The engine was designed for the Rpms. It is not abuse. I go into VTEC every single day. I probably even VTEC every time I get up to speed. I redline the car pretty much every day. Bought my car at 100,000. Have 160,000 and I haven't touch a thing besides oil.
Funny you say that because my fa5 has gotten its best mileage on 2 tanks that included dyno tuning (603kms) and street tuning (573kms) with the average being 500kms
Old 08-14-2013, 04:11 PM
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Default Re: Bad gas mileage; 08 civic Si

Tire pressures made a noticeable difference to me. Keep in mind a change in climate/temperature and how it affects air pressure.
Old 08-19-2013, 07:36 AM
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Default Re: Bad gas mileage; 08 civic Si

How can you NOT go into VTEC?

Maybe OP was lugging the car.
Old 08-19-2013, 03:26 PM
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Default Re: Bad gas mileage; 08 civic Si

i find it impossible not to VTEC at least once a drive...
Old 05-31-2015, 03:59 PM
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Default Re: Bad gas mileage; 08 civic Si

Can someone please help me out I've been trying to research this but I cannot find the info I am looking for. What exactly is a gallon on a 07 civic si , would it be 2 of the squares or 3 ?
Old 05-31-2015, 04:20 PM
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Default Re: Bad gas mileage; 08 civic Si

what purpose would it serve to know how many dot it is?
Old 06-01-2015, 05:53 PM
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Default Re: Bad gas mileage; 08 civic Si

Originally Posted by DaveSi677
i find it impossible not to VTEC at least once a drive...
We didn't buy our Si's to idle them around in life. Use them as Honda intended....let them breathe...VTEC is what Honda wants us to use!!
Old 06-03-2015, 05:17 AM
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Default Re: Bad gas mileage; 08 civic Si

Originally Posted by Valenciabrihh
Can someone please help me out I've been trying to research this but I cannot find the info I am looking for. What exactly is a gallon on a 07 civic si , would it be 2 of the squares or 3 ?
It depends on the level of gas in the tank; the gauge moves down slower at higher levels, and faster at lower levels (just like all Hondas have always done). There's no set amount that a dot/square refers to.
Old 06-09-2015, 12:37 PM
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Default Re: Bad gas mileage; 08 civic Si

Thank you for all the feedback I appreciate it
Old 06-09-2015, 12:55 PM
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Default Re: Bad gas mileage; 08 civic Si

Originally Posted by TunerN00b
Absolutely.

Miles per tank is a meaningless measurement. Some people run the tank dry, others fill long before it is actually empty, and the gas gauge is very inaccurate.

Use miles per gallon, which is a meaningful measurement.

If you're still getting worse than expected, verify that the car is in proper running shape, especially alignment and tire pressures.

If it is, and you're still getting poor mileage, than you probably need to learn how to drive correctly. This isn't an insult to you, this is an observation of the vast majority.
Your and dick ... I'm sure it need a valve adjustment. And a good amount of your mpg will come back ,
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