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Thread: Mpg question and fuel gauge

  1. #1
    Regular Member winnie2457's Avatar
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    Exclamation Mpg question and fuel gauge

    Hi all I have a vectra estate all the mods are listed in my signature and engine etc. I have a new egr plus new flywheel clutch thermostat and inlet manifold along with. New alternator

    I have a caterman box fitted and I was doing mixed
    driving mostly motorway speeds with some heavy acceleation and over taking combined with 100miles of a roads I have done 336mile and used neArly 3/4 of a tank with a range of 200miles left but I won't get that out of this tank

    air con has not been on and windows have been up the car runs fine and pills like a train I have a fault code stored with the car and spanner light on ignition which I will read tonite and post up the code

    why is my miles to a tank not good and also the fuel gauge goes deon very fast even when driving gently any help really appreciated

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    Regular Member winnie2457's Avatar
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    i seen the fault code and it was p0002-52 rail pressure control range/performance

    i take it the tuning box is causing this there is no driveability problems with the car and the spanner light never comes on when driving it only happens now and then when i turn ignition on the light stays on untill i start the car thats it once reset it will be weeks till it comes back

    any ideas guys also about the mpg issue too cheers

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    Regular Member winnie2457's Avatar
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    Someone must know about this any one else had problems with mpg on there estates when all is well and how many miles do you get on a full tank with half motorway and half town driving

    car is perfect running order no faults and has following mods in signature

    will the dpf cause less mpg than a hatch vectra

    I keep comparing it to my tdci mondeo I had which could get 700miles on a tank and it was a estate with a decat pipe

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    Regular Member DaveW555's Avatar
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    I'd be happy with that kind of mileage out of mine tbh and mine is a CDTi 120. It does about 450 - 500 on a full tank and my mrs drives like a vicar. Its still on standard mapping with only the air box mod done so far.

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    Regular Member ghostrider's Avatar
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    Vehicle : 2.0l CDTi Bi-Turbo Insginia Sports Tourer

    Trim : Vx Line Nav Sri

    Engine : 2.0

    Year : 2014

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    I mentioned the figures for an estate in a thread this morning:

    http://www.vectra-c.com/forum/showthread.php?t=109547

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    Trim : Sri nav

    Engine : Z19dth

    Year : 2006

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    I've recently had my DPF removed and the read-out shows i'm doing around 60mpg (although it's not greatly accurate, so might be closer to mid 50's). So accordingto the read-out, the car will do over 700 miles to the tank.

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