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Thread: Spark plug test X18XE1

  
  1. #1
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    Fraggle's Avatar
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    Spark plug test X18XE1

    I borrowed some NGK Iridiums and tried them in my car today. took it out for a test drive. car never felt any quicker (not that I was expecting it) it actually felt (the only way I can describe it is 'empty')
    It didn't rev so freely either.

    Went back to garage and put my Bosch Super Plus ones back in. and at the same time put the top airbox cone pipe back in.
    Car drove a lot better. it was smoother, tighter, and felt torquey again.
    exhaust sounded better too.

    I have the K&N, Vectra C pipe and Cat back Powerflow exhaust.

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    Vauxhall16v's Avatar
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    There has been many rumors about the pipes within the air filter box and personally I have left the top one in, and removed the bottom one. I also have the "Airbox Mods" in place, veccy pipe ect.

    It will feel smoother due to the funneled shape cone at the top of the airbox, draws the air in smoother if im correct. A fellow Member called NRY has a massive debate on this, there's loads of mixed opinions.

    As for the spark plugs, heh, you wont notice hardly any (if any) increase in peformance ect just by changing them; They'll have to be upgraded in relation to other mods within the engine to actually "feel anything"
    Astra Coupe Bertone 1.8

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    I know about the thread, that's why I got the pipe to put back in to try.
    I wasn't really expecting anything with the iridiums really. but I think what I've proved to myself is that I could have paid for some and left them in, fooling myself that they're better when they're actually not.

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    Best plugs to use are the GM ones, the peroformance ones can sometimes have negative effects on the running of the engine, especially if the rest of the car is standard.

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    Ah sorry to inform you on what you already knew .

    Thats a good way to sum it up, Sure theyre a better quality, but as you found out, that doesnt always mean youll expect anything! Few people should read this to save themselves going out of pocket to expect a difference.
    Astra Coupe Bertone 1.8

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    I got gm ones a while back to replace some NGK ones the previous owner popped in! My car actually felt better with the gm plugs in!

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