2000, E39 525i Auto - Fuel Saving Devices? Scam or Not?

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  1. 2000, E39 525i Auto - Fuel Saving Devices? Scam or Not? 
    #1
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    Hello,

    I have just last week purchased a BMW with a 2.5 litre engine, which is great for motorway driving as I can get about 33MPG out of it but around 21/22 approx for inner city driving.

    It has amazing power, great acceleration and really 'flies' on the motorway!

    Last night I randomnly stumbled across websites for 'Fuel Saving Devices', 'Performance Chips' claiming that fitting one of these devices/magnets saves fuel and increases fuel economy?

    Just wondered if:

    a) Are these Legal or a Scam?
    b) Do they actually save fuel/work?
    c) Has anyone tried these devices or have one fitted?
    c) Is this different to ECU Remapping?
    d) What else can be done to save fuel etc? Air Intake Checks/Valves/Filter??

    Thanks.

    Squibworth

    P.S I haven't bought one of these.
     
     

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    a)scam
    b)no
    c)doubt it

    if they were that great manufacturers would fit them from new etc. complete rubbish.

    best way is keep the car in good working condition, tyre pressures correct etc. a remap may give you better economy.
     
     

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    Quote Originally Posted by Squibworth View Post
    Hello,

    I have just last week purchased a BMW with a 2.5 litre engine, which is great for motorway driving as I can get about 33MPG out of it but around 21/22 approx for inner city driving.

    It has amazing power, great acceleration and really 'flies' on the motorway!

    Last night I randomnly stumbled across websites for 'Fuel Saving Devices', 'Performance Chips' claiming that fitting one of these devices/magnets saves fuel and increases fuel economy?

    Just wondered if:

    a) Are these Legal or a Scam?
    b) Do they actually save fuel/work?
    c) Has anyone tried these devices or have one fitted?
    c) Is this different to ECU Remapping?
    d) What else can be done to save fuel etc? Air Intake Checks/Valves/Filter??

    Thanks.

    Squibworth

    P.S I haven't bought one of these.
    Hi Squibworth,

    The advice Deano has given is spot on

    a)scam
    b)no
    c)doubt it

    if they were that great manufacturers would fit them from new etc. complete rubbish.

    best way is keep the car in good working condition, tyre pressures correct etc. a remap may give you better economy.
    To add my own version to these answers


    a) Are these Legal or a Scam?

    Legal but a total Scam

    b) Do they actually save fuel/work?
    No, for the same reasons Deano stated.

    c) Has anyone tried these devices or have one fitted?

    I only know of people who have been advised against fitting them. For the reasons above


    d) Is this different to ECU Remapping?

    Totally...when done effectively an ECu remap is the best way to improve the performance and economy of your car.


    e) What else can be done to save fuel etc? Air Intake Checks/Valves/Filter??

    New OEM BMW panel filter.
    Regular servicing to keep the engine running as intended from BMW
    Remap.
    keep tyre pressures correct at all times
    Remove things like a roof rack if you have one fitted


    Thats about it unfortunately....but good luxury motoring and cheap fuel costs dont normally go hand in hand
     
     

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    the driver is the best fuel saving device fitted to any car
    smooth driving,avoid harsh acceleration/braking and timing your entry into junctions to avoid stopping save fuel the best
    what i've felt,what i've known
    never shined through in what i've shown.

    -------------------------------------------
    PLEASE READ THE POSTING RULES & HOW TO CORRECT THREAD TITLES & THE SELLING RULES
     
     

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    the fuel saving magnets i can assure you 100% are no scam!!!!!!!
    as for the chips these are no scam either BUT are a very crude way of obtaining not even 1mpg more so although they state big improvements???? wich is bolrocks they do make a slight difference..
    i have been tunning cars now for 10yrs so if you have any questions on these items then fire away.
    going back to the ecoteck fuel saver (magnets) these are very effective and placed in the right location and the correct way round you can expect to see a boost of up to 3mpg,, over a full tank this is a good saving..
    another good product i use/sell is a fuel addative (not available on the shelf) and it takes the octaine rating up by up to 5 points (dependent on your dilution) this basicaly means you can use tesco 99ron and take the rating above and beyond shell optimax
    (more details upon request)
    by the way i have tested every fuel addative / saver/ cleaner/booster ect ect on the market and currently work in the fuel industry.
    Last edited by r32to330d; 30-09-2008 at 12:18. Reason: because i can
     
     

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    Thanks for the reply guys!

    I am trying to get up to speed as quickly with regards to mods on a 5 series.

    Whats the difference between the 'magnets' and 'performance chip'? i.e function wise.

    Also, what are some common mods regarding a 5 series and where can I engross myself in material regarding mods?!

    Cheers.
     
     

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    Quote Originally Posted by Squibworth View Post
    Thanks for the reply guys!

    I am trying to get up to speed as quickly with regards to mods on a 5 series.

    Whats the difference between the 'magnets' and 'performance chip'? i.e function wise.

    Also, what are some common mods regarding a 5 series and where can I engross myself in material regarding mods?!

    Cheers.
    I believe the only way to learn is by "Trial and Error" preferably somebody else's

    What mods (styling/performance/In Car Entertainment) are you looking to do your vehicle as I have done one or two to my car
     
     

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    Am possibly thinking of having the car lowered, the ECU remapped and putting a stealth air filter (as seen advertised on ebay - I assume these are the dogs b****cks, and should help with fuel economy etc), also putting a Xenon HID kit in.

    These are just to start, not sure about the lowering tho? Any other mods that can be done.
     
     

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    if you are adding a filter this will decrease your mpg unless you match the paramiters of the inlet (filter) to the outlet (exhaust) the chances of getting this bang on is near zero and if you got it bang on i strongly sudjest you put the lottery on!!!!!!
    as for the magnet fuel saver---- i have a 330d a bowler wildcat a new shape astra d a meastro turbo (the fastest car on santapod raceway 2001-2002) and a rib (boat) all my cars run with 3 ecotecs on each vehicle and DO make a difference in the mpg and the running of the vehicle... the biggest key is to get the ecotec as close to the injectors or pump as possible...... do you all know the lighter trick with a magnet?????????
    the chip for 99p crack is as follows (ebay) the ecu on any car judges the inlet temp of the inlet manifold and sways the parameters of the mass meter to suit... this is done via the temp sensor on the manifold itself.............
    you remove the plug and place a resistor in the plug and drive as normal..... the ecu now thinks your car is up mount everest in air more dense than a hoover... so adjusts the mixture to suite..... in short it does work but dont bother!!!!
     
     

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    #10
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    Thanks for the replys... Can someone please tell me what some standard styling MODs are for a 5 Series?

    Aside from body kits, I am interested in putting a Xenon HID Kit in and possible having a leather refit, black leather including door cards.. Any ideas where I can pick these up?
     
     

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