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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


Hi Jalal,

As you know I joined the 'power club' today and when I picked up the Exy from you we discussed a mod the Hi-Tech boys did to my system.
This mod was to weld small '50 cent sized' packing pieces at key points along the system to potentially stop the resonators from vibrating on the heat shields.

The drive home being about 1.5 hrs in traffic has hilighted a louder than expected in-cabin resonance at 1500rpm which seems to sit around where the Exy wants to rev at 60kph in OD.
The loudness is in proportion with the strain on the engine in that when increasing throttle slightly the resonance gets louder and when backing off slightly the resonance gets softer.
Knocking the OD off increases the revs and quietens the resonance.

As William mentions, sounds quiet outside but I am not getting the same feeling of 'no change' to noise levels in-cabin.

Wondering if anyone else with the full system could share their feelings of in-cabin exhaust noise with me ?

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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19/Dec/2006, 8:58 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


Kev,

Welcome to the power club emoticon

I drove your exy from Hi-Tech back home and tested it in all speeds from 40kms up to 80kms/hour and did not experience this cabin noise at all.

The additional 50 cent pieces are for an added peace of mind and I asked Hi-Tech to weld these for extra strength and to stop any "possible" vibration of the resonators.

There is one potential cause of rattle with the system and that is directly above the second resonator where the factory heat shield is. With some installations, I have noticed that the edge of that heat shield touches (just slightly) the resonator when you rev up the engine or when sitting on D at the lights.

Please check that heat shield and if you see it too close to the resonator, just push it up with your hand (it is a soft type)

If that doesn't solve the problem, you have 10 years warranty on your system and can always take it back to Hi-Tech for further diagnosis.

Hi-Tech can even install a THIRD resonator for you if you still consider the cabin noise being too loud, which I doubt, cause I have been driving with this system for over a year now with no cabin noise (mine is auto too)

The only cabin noise that was mentioned previously was by Adam, and that was due to the design of his twins tail-pipes being too close to each other. (one of the first systems fitted)

Last edited by jalalski, 19/Dec/2006, 9:12 pm


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19/Dec/2006, 9:06 pm Link to this post Send Private Message MSN Blog
 
NPC73 Profile
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Date Registered: 12-2004
Location: Mount Isa, QLD
TOTAL POSTS: 1247
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Hi Kev,

Welcome to the power club.

Sorry to hear your setup is not quite right yet, like Jalal said you have 10 years manufacturers warranty on the full system so take full advantage of that.

I didn't experience any in cabin resonator noise when I had my system installed. The only initial problems I had when first installed was the Cat vibrating on the chassis during high revving, there is not much room in there where the Cat is installed, but a second trip to the muffler shop and all was fixed for me and everything has been sweet since.

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Noel...
Member ID: X-072 (Retired Administrator)
2003 X-trail, TI, Manual, (Series 1) - (with the works)
2013 Toyota Prado, Manual, Turbo Diesel - (Snorkel-K&N-Full Exhaust, 20" Low Profiles, Chrome Bullbar, HID Spots, + All the Bling!)
19/Dec/2006, 9:47 pm Link to this post Send Email PM   Send Private Message MSN Blog
 
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


Thanks guys,

I'm due to go to Brisbane at the end of this week so I will have to wait until I get back to go see Hi-Tech again. Too much packing to do in short time.
Seems a lot of the noise is coming from the back so all the stuff in there should absorb most of it.

Maybe William might like to meet up and we can compare ?

I'm still interested in hearing how Hi-Tech fixed Adam's initial problem you mentioned Jalal. Sounds like it might be the same I have.

Last edited by Revhead Kev, 20/Dec/2006, 6:35 am


---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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Rybky Profile
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X-TRAIL LEGEND
 


Date Registered: 08-2005
Location: Sydney
TOTAL POSTS: 542
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


quote:

Revhead Kev wrote:
I'm still interested in hearing how Hi-Tech fixed Adam's initial problem you mentioned Jalal. Sounds like it might be the same I have.



Hi Kev, my resonance was different to yours, it occurred only on deceleration at about 3500rpm (engine breaking). This was only when I had just the cat-back system though, since having the extractors and cat done this has gone away completely and there is now no resonance at all.

You should definitely get them to look at it, there are two possible causes:

1. There is a leak on a weld.
2. Part of the system is touching the underside of the car.

You might even be able to check these yourself if you have time, just start it from cold and crawl under, check the joints to see if you can feel any air flow and shake the system slightly to see if it is knocking on anything.



Last edited by jalalski, 21/Dec/2006, 1:16 pm


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- Adam (MY04 Titanium Ti-L)
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20/Dec/2006, 7:19 am 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


quote:

Revhead Kev wrote:
Seems a lot of the noise is coming from the back so all the stuff in there should absorb most of it.



Looks like something is touching and I bet it's the heat shield. Nothing major mate and the boys will fix it for you (if you can't see it yourself before the trip) within 10 mins.

quote:

Maybe William might like to meet up and we can compare ?



William's set-up is different than yours. He only got the cat. back system, so the comparison won't be accurate. You can compare it to mine if you like, cause I have EXACTLY the same set-up as yours.....aaah, I just remembered, I have the V8 sound from the CAI. hahahaha Am sure you wont like that "noise" either (just kidding)

quote:

I'm still interested in hearing how Hi-Tech fixed Adam's initial problem you mentioned Jalal. Sounds like it might be the same I have.



Adam has done his cat back set-up before I have done mine. He doesn't have a towbar and chose to have the twin tail pipes close to each other in the middle of the bumper. This in turn has created a resonating sound within the rear section of the car. I, on the other hand have a towbar, so the set-up that was designed for my exy had the tail pipes spread apart (just like what you have now). Since then the problem was corrected and all twin tail pipes are spread apart and again, this is exactly what has been fitted to your exy (i.e. the new design template).

We have discussed this previously in the "aftermarket exhaust systems" thread.



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20/Dec/2006, 7:26 am Link to this post Send Private Message MSN Blog
 
Z1000 Profile
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X-TRAIL NEWBIE
 


Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


quote:

jalalski wrote:

The additional 50 cent pieces are for an added peace of mind and I asked Hi-Tech to weld these for extra strength and to stop any "possible" vibration of the resonators.




This is a wonderful news Jalal, I will see if these 50 cent pieces can resolve the ongoing vibrating heat shield issue.

What are these 50 cent pieces like physically?


Last edited by Z1000, 20/Dec/2006, 9:35 am


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20/Dec/2006, 9:34 am 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


quote:

Z1000 wrote:
This is a wonderful news Jalal, I will see if these 50 cent pieces can resolve the ongoing vibrating heat shield issue.

What are these 50 cent pieces like physically?



Hi William, I think your system has them too, as Hi-Tech has been doing that with any installation done in Sydney.

Here is what they look like

Image Image





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20/Dec/2006, 10:04 am Link to this post Send Private Message MSN Blog
 
Z1000 Profile
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X-TRAIL NEWBIE
 


Date Registered: 06-2006
Location: Sydney.
TOTAL POSTS: 83
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Re: Hi-Tech X-Trail Extractors/Headers & Full Exhaust System


Thanks for the pics Jalal.

You are right, mine does have several of them as well. According to Hi-tech the pieces are there to stop the exhaust been caught/ripped off the car on fire trails, maybe it reduces the overall vibration as well.

I am getting Hi-tech to separate heat shield further apart from 1st flange and 2nd resonator tomorrow morning, as there is only so much I can bend without taking the exhaust off. Hopefully the noise issue can be resolved before I impress my EXY friends in Melbourne this weekend.

Last edited by Z1000, 20/Dec/2006, 10:50 am


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William (X363)

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20/Dec/2006, 10:47 am 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


Nah mate, these pieces got nothing to do with preventing the exhaust from getting ripped off on fire trails LOL and I don't think ANY support will be able to stop that from happening if you push your xtrail to THAT sort of limit emoticon

I'd be very worried if an exhaust system was dependent on these 50 cent pieces for that type of support. hehehehe

As I said earlier, we put them there for an added peace of mind. Nothing more.

Am sure the boys at Hi-Tech will sort out the heat shield vibration. I had to go back to them once as well and it got sorted within 10 minutes.

Usually, they can't tell if the pipe and/or resonator will touch the heat shield until you actually drive it for a while and let the system settle in. It is easier to pin point the cause of the rattle then.

Let me know how you go tomorrow and if there is anything I can help you with.

Last edited by jalalski, 20/Dec/2006, 1:26 pm


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