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ExyCol Profile
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Date Registered: 09-2006
TOTAL POSTS: 116
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Its true I could somehow block the other pipe... but then I have more parts to fit to the vehicle during a recovery - I'd rather it kept simple and easier (especially if I'm stuck at the beach with the tide coming in). Since Jalal has confirmed the option is available, when finances allow I will look at the single or twin pipe option and see which might better suit me. My old car had a decent sized pipe which was kind of loud, but still legal - noise issues won't be my concern emoticon
23/Oct/2006, 6:54 pm Link to this post Send Email PM   Send Private Message
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6006
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Yes, the less parts you have, the less there is to forget to pack emoticon
Would you really like to have a twin exhaust ?
Maybe if you talk to the Hi-Tech guys they might be able to fit a manual shutoff butterfly valve in one of the tailpipes for you ?

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Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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23/Oct/2006, 9:36 pm Link to this post Send Email PM   Send Private Message Blog
 
ExyCol Profile
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Date Registered: 09-2006
TOTAL POSTS: 116
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Well Jalal has already said I can have a single outlet for a Hi-Tech Exhaust, so its a matter of getting the finances for it now.

Actually, if I was to get the single outlet... I wonder how big the pipe would be?
24/Oct/2006, 12:24 pm Link to this post Send Email PM   Send Private Message
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6006
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Depends on if you want to keep the same air flow volume, which I guess you would emoticon
You need a pipe diameter such that the area is double the area of one of the dual pipes to achieve that.

Since circle area is Pi x Radius x Radius then
if r1=radius of standard pipe with dual outlets
and r2=radius of your required single pipe,
then Area = 2 x Pi x r1 x r1 = Pi x r2 x r2
which gives 2 x r1 x r1 = r2 x r2
finally becoming r2 = 1.414 x r1

So the ratio of pipe diameters will also be 1.414 emoticon

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Kev X450(c) T30 Guru
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24/Oct/2006, 1:06 pm Link to this post Send Email PM   Send Private Message Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


quote:

ExyCol wrote:

Well Jalal has already said I can have a single outlet for a Hi-Tech Exhaust, so its a matter of getting the finances for it now.

Actually, if I was to get the single outlet... I wonder how big the pipe would be?



Col, I said it won't be a problem if you so choose, but should Hi-Tech do this for you and discover that it doesn't meet the legal dba (noise levels) you won't be able to have it, even you if the noise is not an issue for you. That is because their current set-up meets this requirement and they wouldn't want that jeopardised.

The pipe of the single outlet will be the same size, but we can go into this level of details when you're ready.

In the meantime, any 2006 volunteers at all for a cat. back system for a bargain price? emoticon


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24/Oct/2006, 1:11 pm Link to this post Send Private Message MSN Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


quote:

jalalski wrote:
In the meantime, any 2006 volunteers at all for a cat. back system for a bargain price? emoticon



Hi Guys,

This offer has been taken-up by a member of our forum with a 2006 exy.

Stay tuned for an update on the cat-back system which will be made available for the 2006 models soon!



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27/Oct/2006, 3:02 pm Link to this post Send Private Message MSN Blog
 
Dave4x4 Profile
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Date Registered: 08-2005
Location: NEWCASTLE
TOTAL POSTS: 690
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Jalal,
I was just looking back over the Hi Tech system and it shows the step down in tube size to 2" from the cat but I thought I had seen somewhere you stated that you had a 2 1/2" system from cat back but I'm unable to find this. Is your system 2" or 2 1/2" it does look like 2"

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(Dave Newcastle 2004 ST
ID: X211

2/Nov/2006, 8:55 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


2" Dave.

THIS is also a good photo of the Hi-Tech system showing all pipe sizes used.



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2/Nov/2006, 9:11 pm Link to this post Send Private Message MSN Blog
 
Dave4x4 Profile
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Date Registered: 08-2005
Location: NEWCASTLE
TOTAL POSTS: 690
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


This is the pic I based my info on, its just I thought you might have got 2 1/2" as a trial on your system
Cheers

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(Dave Newcastle 2004 ST
ID: X211

2/Nov/2006, 9:14 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Dave,

We (me and Hi-Tech) debated this for the cat back system and it was decided that the 2" pipe size would be more suitable for the low and mid range RPM gains, which this system is designed for and which most xtrail drivers use in their day to day driving.

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2/Nov/2006, 9:21 pm Link to this post Send Private Message MSN Blog
 


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