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99 Civic Si headers

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Old Oct 27, 2013
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Exclamation 99 Civic Si headers

I have heard different things about the types of headers out on the market for my car. I was wondering what style headers would give me the best performance results?
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Old Oct 27, 2013
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Re: 99 Civic Si headers

Depends what type of results you are looking for. Shorty header is going to give you more power on the top end, while a long tube header will give you more midrange power.
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Old Oct 27, 2013
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Re: 99 Civic Si headers

What do you mean by long range or short range?
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Old Oct 27, 2013
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Re: 99 Civic Si headers

It refers to the length of the runner tubes coming out of each cylinder.

Shorty Header:



Long Tube Header:


Last edited by GolNat; Oct 28, 2013 at 05:53 AM.
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Old Oct 27, 2013
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Re: 99 Civic Si headers

Aren't they all the same basic size though? And what do you mean by power at the top end or midrange?
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Old Oct 28, 2013
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Re: 99 Civic Si headers

Pics are fixed!

They are all the same diameter, but the length of the tube from each cylinder is longer or shorter. As you can see in the picture the shorty header has the 4 tubes collecting into 1 piece only after 8 or so inches. The long tube header has 1-2 feet of tube before they all come together into 1 tube.

Mid range power would be in the middle of your tach 3k-5k rpm is where you would feel the power. High end power would be above 5k rpm range before you felt anything.
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Old Oct 28, 2013
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Re: 99 Civic Si headers

Thanks for the pictures! Made it easier to visualise. I would rather have my power midrange so a long tube header will be it. Now the question is who makes better long tube headers? Or are they all the same besides the fact that some will be carb or street legal and others not?
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