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Low miles per tank

Old 10-21-2017, 08:57 AM
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Originally Posted by sixshooter
The 1.6 cars have a smaller fuel tank than the 1.8 cars. 1.8 tank is 12.7 gallons.

You can adjust the needle or the arm on the sensor if needed.
If you bend the sensor, bend it so the float ends up lower in the tank than it is now. That is the direction.

Either way you adjust things, you will need to run some test, like in my previous post, to know the new calibration.

Note: I removed my attitude from my previous post.
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Old 10-25-2017, 02:18 PM
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Originally Posted by thumpetto007
There is no reason to daily drive track day tires. Extremely illegal speeds around corners are easily attainable with econotires.

-Any toe in/out will also reduce your mpg.

-Find yourself the cheapest, lightest rims that fit over your brakes (some 14x7 fit over sports brakes) and the cheapest, narrowest econotire you can find. I promise you see a minimum 4 mpg just from that.

-find a cheap, functional oem undertray

-cut out rear bumper skin, lower your drag a bit (free if you have a tool that will do it)

-look around for a different ring and pinion. I'm using the 3.63 set, and cruise at 80mph at 3800rpm. (most expensive option, but lower rpms at the same speed is more mpg)

- there are plenty of cheap cars (1500 dollar range) that get over 40mpg (many manual hondas, toyotas). Some of them easily pass 50mpg (such as and old 5 speed manual Toyota Tercel) if you are really concerned about lowering the cost of your commute that much

That's all I can think of, good luck.
I don't want better fuel economy.. I want more miles per tank. Maybe i can put in a bigger fuel tank from a newer miata.
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Old 10-25-2017, 02:20 PM
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Originally Posted by DNMakinson
If you bend the sensor, bend it so the float ends up lower in the tank than it is now. That is the direction.

Either way you adjust things, you will need to run some test, like in my previous post, to know the new calibration.

Note: I removed my attitude from my previous post.
Thanks for the info!
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Old 10-25-2017, 02:21 PM
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Originally Posted by concealer404
Sounds like a lot of work and decrease in enjoyment to make a non-noticeable economy change from a financial perspective.

Also: My car can and has done over 30mpg with 6spd/4.30 running 75mph, 245/40 VR1s and a big 'ol wannnngggggggg.

Measure away!
I just want more miles, not more fuel efficiency. I don't care if it costs more to fill up the tank, i just want to fill up less often. Maybe I didn't properly state what my problem was in my first post.
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Old 10-25-2017, 02:25 PM
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To make any appreciable difference, you'll probably need to put a second fuel cell in the car or something. Cruising range isn't the strong suit of a NA6, and any improvements will come at great cost an effort.... for not much improvement.

Easiest way to increase range would be to increase efficiency. Time for Megasquirt.
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Old 10-25-2017, 03:20 PM
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Switching to a taller rear end gear would get you significantly further on a tank in your highway driving.
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Old 10-25-2017, 03:22 PM
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Originally Posted by sixshooter
Switching to a taller rear end gear would get you significantly further on a tank in your highway driving.
Maybe. Or with a 1.6 it'll just lug more.

I've had:

5spd 4.30
6spd 4.30
6spd 4.10
5spd 4.10
6spd 3.90

And all of them ended up within static noise of each other in terms of MPG, no matter how much or little power they made.
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Old 10-25-2017, 03:37 PM
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Originally Posted by concealer404
To make any appreciable difference, you'll probably need to put a second fuel cell in the car or something. Cruising range isn't the strong suit of a NA6, and any improvements will come at great cost an effort.... for not much improvement.

Easiest way to increase range would be to increase efficiency. Time for Megasquirt.
I have a WTB thread for one now. Just waiting on someone to let go of their used one in my price point. It probably doesn't help that i have a 1.6 tank and a 1.8 motor. When i get the turbo installed it will be even worse lol
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Old 10-25-2017, 03:42 PM
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Originally Posted by 1.6turbokid
I have a WTB thread for one now. Just waiting on someone to let go of their used one in my price point. It probably doesn't help that i have a 1.6 tank and a 1.8 motor. When i get the turbo installed it will be even worse lol
Turbo should help MPG if tuned well.

What's your max budget? I have a friend local that has an MSPNP2 on his 93 that i'm trying to get him to sell since we're swapping a VVT motor in his car over winter.
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Old 10-25-2017, 04:16 PM
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Originally Posted by concealer404
Turbo should help MPG if tuned well.

What's your max budget? I have a friend local that has an MSPNP2 on his 93 that i'm trying to get him to sell since we're swapping a VVT motor in his car over winter.
I would like to not pay more that $500 bucks. I would rather have a MS3x though. I could cough up some extra for one of those.
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Old 10-25-2017, 04:18 PM
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Mkay i will relay that.
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Old 10-25-2017, 04:24 PM
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Originally Posted by concealer404
Mkay i will relay that.
Sweet. I have most everything else for the turbo set up already. I may switch turbos though. I have a K0422 (Mazdaspeed) turbo i was thinking about making a log manifold for. Apparently they are rated for around 300 whp. That motor is a 2.3 but i think it would spool quite nicely on the 1.8.
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Old 10-25-2017, 08:30 PM
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Originally Posted by 1.6turbokid
I don't want better fuel economy.. I want more miles per tank. Maybe i can put in a bigger fuel tank from a newer miata.
Please, someone delete this thread.
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Old 10-25-2017, 08:41 PM
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What does that even mean?
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Old 10-25-2017, 11:04 PM
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Originally Posted by concealer404
Maybe. Or with a 1.6 it'll just lug more.

I've had:

5spd 4.30
6spd 4.30
6spd 4.10
5spd 4.10
6spd 3.90

And all of them ended up within static noise of each other in terms of MPG, no matter how much or little power they made.
I'm curious, which combo did you like the best?
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Old 10-26-2017, 07:03 AM
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Originally Posted by 1.6turbokid
What does that even mean?
It means he said what we were all thinking, that you are a fool. Better fuel economy is by definition more miles per tank.

If you tune your cruise cells for significantly leaner running then you will extend your range per tank significantly at no cost in power when accelerating. I also bet there are other places in your fuel and ignition map where changes could increase your economy as well with no loss of acceleration. But tell us again what you don't want to do that might help you achieve your goals.
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Old 10-26-2017, 08:48 AM
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Originally Posted by sixshooter
It means he said what we were all thinking, that you are a fool. Better fuel economy is by definition more miles per tank.

If you tune your cruise cells for significantly leaner running then you will extend your range per tank significantly at no cost in power when accelerating. I also bet there are other places in your fuel and ignition map where changes could increase your economy as well with no loss of acceleration. But tell us again what you don't want to do that might help you achieve your goals.
I am not a fool. I understand the concept of miles per gallon and the correlation to mileage range per tank. I stated my gas gauge is not accurate and I am getting low miles per tank. I was saying that I am only getting 200 miles even though i'm getting 24~ mpg. I never stated i was upset with my fuel economy. Every time I make a thread there is always people who talk mess for no reason.

Last edited by 1.6turbokid; 10-26-2017 at 09:04 AM.
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Old 10-26-2017, 09:22 AM
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Originally Posted by LukeG
I'm curious, which combo did you like the best?
N/A, 6spd/4.30.

Turbo...the 6spd/4.10 in terms of what i've owned. But i've driven a turbo 6spd/3.90 or two, and that's more better.
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Old 10-26-2017, 11:17 AM
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Post your MSQ
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Old 10-26-2017, 11:55 AM
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I don't have Megasquirt for this build yet. I am still trying to source one at a reasonable price.
I would rather get a used MS3x but i may end up trying to get Braineack to build me one if i can't find one soon.

Originally Posted by sixshooter
Post your MSQ
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