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Thread: Car has lost power

  
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    Car has lost power

    Well I had my car on the rollers again over the weekend to see if I could break the magical 110bhp mark with my motor.

    Didn't manage it dropped 8bhp and 21ft lb torques, the graph is completely different now to what it was last year.

    Here is last years.



    And here she is now...



    Can't understand it, same rollers aswell... Could understand 2-3bhp but not as much as I have lost.

    Since the last rollers, all I have done is, Different gearbox F17 off an SXI, serviced the car properly, New flexi section and lambda sensor. Would fuel make a difference? as I've been using that Shell Fuel save stuff.

    The air to fuel ratio is different aswell like, richer on idle and leaner on acceleration. It when you start getting towards the top end, it does feel like it is running out of steam.

    One thing I'll say, when my car was MOT'd the bloke said that one of my lambda sensors was constantly closing and opening and sending emissions funny.

    Any ideas at all?
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    Anyone know at all?
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    that 2nd graph is no way near as sooth as it should

    from being in the car before and after I haven't noticed much difference
    120.7bhp & 145lbft torque made at MPG 03/10/10

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    Quote Originally Posted by 106shed View Post
    that 2nd graph is no way near as sooth as it should

    from being in the car before and after I haven't noticed much difference
    Definitely doesnt feel like the same car though gav mate

    Doesn't pull aswell up hills at all. Even when you drop a cog, if anything, it feels worse!
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    try running some v power and if everything else is ok bar that lambda you wanna go scrappy hunting on weekend get another?
    120.7bhp & 145lbft torque made at MPG 03/10/10

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    Quote Originally Posted by 106shed View Post
    try running some v power and if everything else is ok bar that lambda you wanna go scrappy hunting on weekend get another?
    Could give that a punt I suppose

    We vill haf to get Schtilschaw to get the Lambda off
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    ok sweet well let me know when you wanna go on saturday ill come pick you up car needs a run otherwise I won't use it for another week.

    Just to eliminate a few more things what about the coolant sensors? usually if they go on the french heap it usually does all sorts of power sapping stuff
    120.7bhp & 145lbft torque made at MPG 03/10/10

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    Quote Originally Posted by 106shed View Post
    ok sweet well let me know when you wanna go on saturday ill come pick you up car needs a run otherwise I won't use it for another week.

    Just to eliminate a few more things what about the coolant sensors? usually if they go on the french heap it usually does all sorts of power sapping stuff
    Worth a punt to pinch one or two of them like.

    I haven't changed sparks in over 25k now like. Due a change maybe?
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    Tom, in saying that different scenario, but there was a lad there at the weekend who had a Black Astra VXR.... He mentioned he was running around 250bhp on the standard map with the modifications he had done to his car. He had a Phase 1 Remap and only produced 253bhp when he was expecting around 270bhp..... Ian mentioned that the weather conditions had a lot to do with this...

    Could be what has effected your results?... so I wouldn't worry about it, especially if the car doesn't drive any differently..
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