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Thread: Dual Mapped LPG 3.9 V8

  1. 10th September 2007, 09:41 PM #11
    Ralph1Malph's Avatar
    Ralph1Malph
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    Thanks guys,
    I will follow these up.
    Hoping to get it sorted prior to Xmas
    Ralph
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  2. 10th September 2007, 09:57 PM #12
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    p38arover
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    Quote Originally Posted by tombraider View Post
    Complete Haltech with Fuel and Ignition Mapping, DUal Maps etc.. was only around $1700 when I had my disco done.

    Better economy, got rid of the POS MAF and went MAP which proved more reliable....
    My previous Rangie also had a Haltech but an early one without ignition control. It, too, used MAP and had no MAF.

    Ron
    Ron B.
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    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  3. 10th September 2007, 10:10 PM #13
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    Ralph1Malph
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    Quote Originally Posted by p38arover View Post
    It, too, used MAP and had no MAF.

    Ron
    Thats my plan
    Ralph
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  4. 10th September 2007, 10:21 PM #14
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    p38arover
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    'Zackly!
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  5. 11th September 2007, 09:54 AM #15
    ytt105
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    MegaSquirt

    Let me just say "MegaSquirt".

    Less than $400 fully assembled, program it yourself with a laptop, just wire it into the existing EFI system and then disconnect the Lucas computer.

    MegsquirtExtra gives dual fuel and ignition maps, both completely programable.

    I built one and fitted it to a 3.5 RR, fuel only. Worked well, but then I upgraded to 3.9 RR.

    Different wiring so I was unable to just plug and play.

    I have rewired and was about to start tuning when my laptop blew up. Getting that fixed now.

    My plan is to have it running Megasquirt for petrol and ignition, and have it changeover to ignition only for LPG when I press the LPG switch.

    At a later date I might investigate having megasquirt run a solenoid via the second fuel map, to control delivery of LPG.

    Have a look at http://www.msextra.com/
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