Why does my car run really bad with an air cone on.

[Golf TD]

I recently installed an air cone on my Golf mk5 1.9tdi and shortly after installing I noticed that my car was very jumpy and had no power. I've put the original airbox back on and it's fine again. Why is this do I need a full induction kit for my car to run properly thanks.

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[Rob69]

Do you reckon an 'air cone' would make any difference to that engine ? You might have upset the MAF sensor by removing the original induction set up.

[Golf TD]

I know it wouldn't make a difference in performance the bloke who remapped my car said it would make it sound a bit better

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[Gazwould]

Keep the original set up and drill some holes in the lower box front and wing side for some induction noise .

[Golf TD]

How do you do this what size holes and how many thanks

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[Gazwould]

About 6 and 6mm .

[Golf TD]

Okay cheers mate

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[zollaf]

did you leave the amm in place when you fitted this new filter, or bin it. i have even seen people put air cones on after their original filter, thus restricting air flow even more.

[Golf TD]

What does aam stand for

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[zollaf]

amm, air mass meter. thats what vw call a maf..

[Golf TD]

Yeah I left that on

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