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Old 08-05-2010, 07:05 AM   #11 (permalink)
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Robchalmers, I know everyone makes fun of what they don't understand. I am trying to find what is causing the huge milage gain. The only thing that has increased my milage over 30 years of driving was when I installed magnets around the fuel line. I could feel the extra torque immediately. The milage increased immediately. The car had a slight hesitation and I could feel the drivability improve. I installed magnets on both of my cars and they both increased from 28-29 mpg highway 36-38 highway immediatly the milage dropped a little when ethenol came out. That equates to almost 30 % change in milage.
One car has 30k and the other has 90k. Both are Nissan which use rubber fuel lines. I don't believe this is just coincidence. I put magnets on my father's big v-8 mercury and his milage went over 29mpg immediately.
I am convinced the magnets are the cause as they are the only variable. I am using regular fuel and the manufacturer recommends premium for best performance. I can push the engine up a hill and there is no knock or pinging. Before it would ping with regular fuel.

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Old 08-05-2010, 12:09 PM   #12 (permalink)
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Fuel saving gadgets - a professional engineer's view
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Old 08-05-2010, 12:13 PM   #13 (permalink)
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good article, I have personality asked this of several engineers & chemists and gotten the same response.
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Old 08-05-2010, 12:27 PM   #14 (permalink)
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Quote:
Originally Posted by hondo434 View Post
Robchalmers, I know everyone makes fun of what they don't understand.
Stop for just a moment, and consider the idea that it's just possible that we DO understand, and you're the one that doesn't, and are in line to be taken for an expensive ride by some con artists.

As for belief... Well, I really, really do want to believe in the fairies at the bottom of the garden :-)
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Old 08-05-2010, 01:11 PM   #15 (permalink)
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Jamesqf, Thanks for you concern, I have already invested a small amount to try the magnets myself. I have had them on for over two years and have enjoyed substantial savings, far more than my small investment.
I am not saying that the magnets are causing the increase in milage, what I am saying is when I put the magnets on my milage went up.
Last year I lent a set of magnets to a member and I have't heard anything back from him.
My conclusion is the vehicle must have fuel injection and an ECU to show any savings.
Another thought, I think everyone can agree that a magnet has a push pull effect on liquids. Consider that there is no electricity in the floor, but if you slide your feet across carpet you have electricity. When a magnet is installed around a fuel line there would be the same push-pull effect, only the magnet stays stationary and the fuel moves past the magnet causing friction and exciting the fuel.

Last edited by hondo434; 08-05-2010 at 04:16 PM.. Reason: addon
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Old 08-05-2010, 04:19 PM   #16 (permalink)
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Quote:
Originally Posted by hondo434 View Post
Robchalmers, I know everyone makes fun of what they don't understand....
You will have to forgive the fun poking here as there have been a lot of claims about magnets. They give power, they improve FE, they make cars not designed for unleaded fuel suitable for use with it, they make cars fly, they make handling better, the cure arthritis, they cure colds - anything you can think of.

Usually these claims do not work so someone claiming they do arouses doubt and ridicule. Even if they earnestly believe them.

Quote:
Originally Posted by hondo434 View Post
I could feel the extra torque immediately. The milage increased immediately. The car had a slight hesitation and I could feel the drivability improve. I installed magnets on both of my cars and they both increased from 28-29 mpg highway 36-38 highway immediatly the milage dropped a little when ethenol came out. That equates to almost 30 % change in milage.
An obvious question here is did the torque increase go away when you took the magnets off or is it still there ? If it is keep them off and see if it goes away.

I don't believe that the magnets got you your improvement either. If you did get an improvement in FE then maybe thats down to your improved technique which is reason for congratulation, so well done with the improvement. As Tesco (UK Supermarket) says - every little helps.

And if it did make the improvement then it has paid for itself then double-bubble as you have all the 100+ tips to go for too.
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Old 08-05-2010, 04:20 PM   #17 (permalink)
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Quote:
Originally Posted by Old Tele man View Post
...actually, the *best* use of a magnet in the pursuit of fuel-economy, is to use one to hold your SGII securely onto the dash for easiest viewing.
I have a hard drive magnet that I will be doing that very thing with! (Too bad there is no steel in the car, I have to add some!)
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Old 08-05-2010, 05:07 PM   #18 (permalink)
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Arragonis, Thank you for your wise reply. I see your Scottish. My great uncle served in the Black Watch in the war (probably I). His name is listed somewhere, maybe Edinburgh. He was with the Argyll & Sutherland Highlanders 2nd Battalion.
I take your advice with the utmost respect, I'm afraid the A-B-A test is not going to work in a timely fashion. Whatever caused the milage to increase has done it permanantly. When I took it off nothing changed. I think the ECU has been changed and won't change until the orginal state of the vehicle is returned.
Special testing equipment for reading the ECU parameters may be needed when doing tests to monitor changes in the ECU.
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Old 08-05-2010, 05:23 PM   #19 (permalink)
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Hondo434's Maxima's fuel log
Efficiency log for: maxi-magnet - 1997 nissan maxima gxe
Lifetime Fuel Economy: 24.74
90-day Fuel Economy: 26.19
3-tank Fuel Economy: 26.2
EPA Rating (% over): 21 (24.7143%)
Total fills: 4
Average cost per gallon: $2.67
Average cost per fill: $33.88
Average cost per mile: $0.11
Lifetime Fuel Economy: 24.74
90-day Fuel Economy: 26.19
3-tank Fuel Economy: 26.2
EPA Rating (% over): 21 (24.7143%)
Total fills: 4
Average cost per gallon: $2.67
Average cost per fill: $33.88
Average cost per mile: $0.11

My fuel efficiency log for essentially the same vehicle (mine is the SE version, his is the base model, but other than trim and slight suspension differences, the same vehicle.)

Efficiency log for: Max - 1998 Nissan Maxima SE
<UL>Lifetime Fuel Economy: 24.35
90-day Fuel Economy: 24.17
3-tank Fuel Economy: 24.73
EPA Rating (% over): 21 (15.0952%)
Total fills: 17
Average cost per gallon: $2.7
Average cost per fill: $48.16
Average cost per mile: $0.11</P><UL>
Lifetime Fuel Economy: 29.51
90-day Fuel Economy: 29.71
3-tank Fuel Economy: 30.64
EPA Rating (% over): 21 (41.4762%)
Total fills: 5
Average cost per gallon: $2.93
Average cost per fill: $39.77
Average cost per mile: $0.1

Here's another Maxima's log.

Efficiency log for: Maxiimoma - 1996 Nissan Maxima GXE
<UL>Lifetime Fuel Economy: 29.51
90-day Fuel Economy: 29.71
3-tank Fuel Economy: 30.64
EPA Rating (% over): 21 (41.4762%)
Total fills: 5
Average cost per gallon: $2.93
Average cost per fill: $39.77
Average cost per mile: $0.1
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Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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Old 08-05-2010, 05:33 PM   #20 (permalink)
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Shadetree mechanic, What did you want to say about the logs?

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