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Thread: Lowering emissions for MOT

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    User richi's Avatar
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    Default Lowering emissions for MOT

    Any suggestions?

    Just been for a MOT today and it failed on the emissions being too high (he said almost double whats allowed)

    What can i do to lower this? Its been of the road for 3 years so not sure if it has anything to do with that,

    Although since i last had it MOT i have had a 4-1 manifold fitted

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    Senior User Club Member paul james's Avatar
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    What engine is it> carb or injection?
    A 4-1 wont make a difference unless its a cat model and you've left the lambda sensor off.

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    User richi's Avatar
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    its a 2.0 xe, didnt think the manifold would make a difference just thought id mention it, looks like the lamba is in the manifold, could it be faulty?

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    It would help infinitely if you posted the results of the emmissions tests.

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    Fit an adjustable fuel pressure regulator and turn the pressure down - ta daaa!

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    chippy shoulder Admin
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    Quote Originally Posted by Will F View Post
    Fit an adjustable fuel pressure regulator and turn the pressure down - ta daaa!
    Fit an FSE at the right pressure and it will drop it for you at random times :D

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    Hydro carbons or co2? Changing anything on the engine could effect emissions enough to put it over - taking off any / all intake filters would help lean it out I expect if it's over 3.5% on hydrocarbons.

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    User richi's Avatar
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    Thanks all i will ring up and ask for the readings.......how hard is it to fit a fse?

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    chippy shoulder Admin
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    Quote Originally Posted by richi View Post
    how hard is it to fit a fse?
    NO, just no!
    fse stands for fucking shit equipment

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    Fse with a powercap,a k and n dustbin filter,with a big bore backbox were the makings of a 190bhp redtop back in the day

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