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Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re:


Ecstrail, I had the HiTech exhaust done on mine at 2600km on the clock.

The HiTech exhaust allows the engine to run more freely and is an improvement over the factory exhaust, so Nissan can't claim it's detrimental, because it's not.

Nissan will not give you anything in writing because they didn't develop the exhaust. Every dealer that has had my Exy on a hoist has commented positively about it and asked how much better the fuel economy is.

Given you are making an improvement over the restrictive factory set up, it's only going to improve economy if you drive it normally.

Last edited by Charlie250, 27/Jul/2014, 1:36 am


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X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
27/Jul/2014, 1:31 am Link to this post Send Email PM   Send Private Message Blog
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re: Hi-Tech Cat. Back System (T31 Manual Diesel)


quote:

Armeya wrote:

Hey Ian,

By cruising I meant driving at any constant speed then add soon as I put a bit of pressure on the gas it drones. It isn't related to the 20k service as it happened before and after it. I realised it can happen when I drive hard through the gears as well. Very odd.



Yes, mine does it all the time under very slight load. It's nothing to worry about. It's just a sound resonance thing that occurs with the straight through rear muffler at a very specific load. I can make it happen at any time.

It's barely detectable and you really need to be concentrating to hear it.

The most noticeable time to hear it is if you are at the rear of the vehicle when it turns off.



Last edited by Charlie250, 27/Jul/2014, 1:39 am


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X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
27/Jul/2014, 1:34 am Link to this post Send Email PM   Send Private Message Blog
 
DogTrail Profile
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Date Registered: 05-2012
Location: Sunshine Coast
TOTAL POSTS: 480
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Re: Hi-Tech Cat. Back System (T31 Manual Diesel)


"A sound resonance thing"

Harmonics probably vary a bit from car to car.

It's unfortunate if the resonance makes other things vibrate to soil the sound.

At a guess, fiddling with the exhaust brackets might change the wave form ?



Last edited by DogTrail, 28/Jul/2014, 9:26 pm


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2011/12 Australia:- 2.5 litre petrol 4WD, Series IV ST, CVT : + some gadgets and cosmetic add-on's. Dirt, (it protects the paintwork) X-2429(c).
28/Jul/2014, 9:15 pm Link to this post Send Email PM   Send Private Message
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re:


Its a VERY MILD drone nose that occurs at a specific load and throttle position momentarily.

You don't notice it unless you put the window down and listen carefully for it.

It's not worth worrying about.

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X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
31/Jul/2014, 1:10 pm Link to this post Send Email PM   Send Private Message Blog
 
Twin mobile Profile
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
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Re: Hi-Tech Cat. Back System (T31 Manual Diesel)


quote:

Charlie250 wrote:

Yes, mine does it all the time under very slight load. It's nothing to worry about. It's just a sound resonance thing that occurs with the straight through rear muffler at a very specific load. I can make it happen at any time.

It's barely detectable and you really need to be concentrating to hear it.

The most noticeable time to hear it is if you are at the rear of the vehicle when it turns off.




My Exy is manual petrol but no-one has brought this up the other thread.

My recently fitted Hi-Tech exhaust also does this. I hear it when the Exy is travelling under load only, but it is easily detectable for me.

Two examples are when accelerating to overtake people on the highway or whilst cruise control is trying to go up hills on the highway. It's more noticeable of course while towing too.

I haven't been too concerned about it as I believed it was just a new feature the XTrail would need to adopt in order to utilise the Hi-Techs full potential. Can't say I've noted any fuel changes just yet, though I haven't done any consistent road trips to compare it to my past readings.

Cheers.

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Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
1/Sep/2014, 11:18 am Link to this post Send Email PM   Send Private Message Blog
 
Rabbit Leader Profile
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Date Registered: 10-2012
TOTAL POSTS: 4
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Re: Hi-Tech Cat. Back System (T31 Manual Diesel)


Hi,
I would like to upgrade my 2011 TL X-Trail.
Is this option still available?

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Shannon X-2717 (c)

2011 T31 TL Series 4 Snow Storm
21/Feb/2016, 8:21 am Link to this post Send Email PM   Send Private Message Blog
 
whip62 Profile
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Date Registered: 10-2010
Location: Bathurst, NSW
TOTAL POSTS: 136
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Re: Hi-Tech Cat. Back System (T31 Manual Diesel)


Hi,

I'm considering getting a single system and have confirmed with Hi-tech that they are still available. Prior to doing this though I do have concerns about the potential for poorer fuel economy. I don't expect to see major improvements to economy, but on the contrary I also can't afford to have my fuel economy going south especially with some outback trips I am planning.

I've read through this thread and there are only a few comments, with examples, regarding fuel economy. I'd appreciate positive or negative feedback from anyone, that has had this system installed, re their fuel economy, especially if you have done enough k's to be able to provide comparisons to before and after installation!

Thanks

Allan

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Whip
X-1712
2010 T31 Series III Manual TL Diesel Flint: Bash plates,Strut Bar,bonnet struts,Nudge Bar & lights,Bonnet & H'Light protectors,Side Steps,Roof Spoiler,Towbar,Kick plates, Pedders lift, dual battery, etc..
22/Feb/2016, 10:44 pm Link to this post Send Email PM   Send Private Message Blog
 
konazz Profile
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Date Registered: 08-2012
Location: Canberra, ACT
TOTAL POSTS: 479
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Re:


Just to confirm. The single muffler will fit with with a bash plate

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Michael K
2012 X-Trail Series IV Diesel TS
Member X-2600 (C)
Mods: Pedders Lift Kit, Bash Plates, 16" X-trail Steel Rims, 235/70/16 A/T Tyres, Heavy Duty shock absorbers
16/Mar/2016, 8:21 pm Link to this post Send Email PM   Send Private Message Blog
 
cyberbrett Profile
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Date Registered: 05-2015
TOTAL POSTS: 64
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Re:


Hi Allan,
If the single diesel system sounds anything like the dual petrel exhaust then you fuel economy will be sightly worse as you drive your car harder as the exhaust sound so good. emoticon

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Brett X-4181 (c)
Asquith NSW
T31 CVT ST 4WD Series 4 2011 (Puddle Jumper)
Full ECB Bullbar (Black), Nite Stalker Spotlights
Sidesteps, Hi-Tech Dual Exhaust, GME TX3100
TJM Engine Bash Plate

19/Mar/2016, 1:31 pm Link to this post Send Email PM   Send Private Message Blog
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
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Re:


My fuel economy with the exhaust done is better than several others I know with standard exhaust. I also know a guy with a Chip My Diesel Chip in his Exy Diesel Manual getting 6.1 lt per 100km on a trip.

The Chip My Diesel unit is the only one on the market that doesn't increase fuel rail pressure and costs about $700.
  

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X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
23/Mar/2016, 10:39 pm Link to this post Send Email PM   Send Private Message Blog
 


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