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jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re: How to Reset/Reprogram your ECU - Series I


quote:

BRETT72 wrote:
 Has anyone tried 'ethanol' fuel in the exee yet.



Yep Brett, I did. I could feel the exy being more responsive at the lights, but I timed it bad, because my exy has just been through the twin mod upgrade and I also cleaned the K&N, so the better performance could well have been because of the mods and not the 100% otcane fuel.

HERE is a thread about it.

I'm now sticking to Shell Optimax, as it proved to be much better than the rest (in my case)

I tried 2 tanks and they returned 11.5LT/100kms each time with this type of fuel (city drving) it is slightly more expensive than Optimax.


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20/Jan/2006, 12:12 pm Link to this post Send Private Message MSN Blog
 
blackxtrailgt Profile
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Date Registered: 12-2005
Location: Northern NSW
TOTAL POSTS: 103
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Re: How to Reset/Reprogram your ECU - Series I


Check with your Nissan Dealer as to whether Ethanol Blends are suitable for the QR25DE.
I know both of my SR motors did not enjoy ethanol and have since reverted back to BP Ultimate.

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Nissan X-Trail GT ~ SR20VET, producing 253Kw@wheels on 15psi and living with my uncle(its new owner) on the Sydney North Shore :D

ME?:
Smashed Twin Turbo VY SS Ute work hack
Heavily modified VQ35 powered N14 Pulsar - 350Hp@front wheels
20/Jan/2006, 8:15 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: 29100
Reply | QUOTE
Re: How to Reset/Reprogram your ECU - Series I


quote:

blackxtrailgt wrote:

Check with your Nissan Dealer as to whether Ethanol Blends are suitable for the QR25DE.
I know both of my SR motors did not enjoy ethanol and have since reverted back to BP Ultimate.



Matt,

Nissan's "recommendation" on the use of Ethanol is as follows:

Nissan suggests that only those cars manufactured after 2004 are Ethanol compatible. In our case it's Series II.


And HERE is the official compatability list of cars with Ethanol as stated by FCAI (Federal Chamber of Automotive Industries)



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20/Jan/2006, 8:46 pm Link to this post Send Private Message MSN Blog
 
Canadas FarEast Profile
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Date Registered: 10-2005
Location: Newfoundland Canada
TOTAL POSTS: 395
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Re: How to Reset/Reprogram your ECU - Series I


Looking for some opinions on the "timing" (not engine timing) of an ECU reset.

If one was to do a performance upgrade, such as a CAI (cold air intake) should one run on the upgrade for a few days BEFORE doing the ECU reset - - or do it right after the install ? ? ?

My initial thought would be to wait a few days to allow the ECU to recognize the change in air flow and then do the reset....

On a secondary note to this, might it be appropriate to do a "seasonal" reset of the ECU, with regard to air flow in particular, in that the density of the air would be considerable between summer and winter ? ? ?

Any comments / opinions appreciated.

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Roger
X 228


2006 X-T Bonavista Edition
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23/Jan/2006, 12:54 pm Link to this post Send Email PM   Send Private Message
 
NPC73 Profile
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Date Registered: 12-2004
Location: Mount Isa, QLD
TOTAL POSTS: 1247
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Re: How to Reset/Reprogram your ECU - Series I


Hi Roger,

From my understanding, the ECU is in constant learning mode and self adjusts from it’s current settings to give optimal performance based on changes to the engine, this being air intake/outtake, atmospheric temperature, quality of fuel, or even the age and type of engine oil being used, etc, etc.

The purpose of resetting the ECU is to bypass the learning time. Depending on driving styles, atmospherics, etc, this learning process could be stretched over a considerable amount of time before it reaches optimal based on your upgrades.

When I replaced my standard air filter to a K&N, the results were immediate. Therefore in my opinion, I assume that having to wait a set amount of time before resetting the ECU would not be an issue.

As for seasonally resetting the ECU, I think this is just going over board, although is still a valid point. I guess this would depend on your location and the amount of fluctuation in air temperatures between the seasons.

Last edited by NPC73, 23/Jan/2006, 1:58 pm


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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!)
23/Jan/2006, 1:54 pm Link to this post Send Email PM   Send Private Message MSN Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29100
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Re: How to Reset/Reprogram your ECU - Series I


Roger,

In my opinion, there will be no reason for someone to reset their ECU if they're running on stock standard xtrail with nothing changed/upgraded. This will obviously achieve nothing.

Before the "forced" ECU re-set process came about and when I installed the K&N filter, it took the ECU 3-4 days to reach the optimum setting and fully adjust to the new air flow.

Had I known about the forced ECU re-set then, I would have done straight after fitting the K&N filter.

The same applies to the CAI and other performance mods.

Basically, you just need to run the car 1 day with the upgraded parts fitted and then implement the "forced" ECU re-set.

Don't think the seasonal re-set in necessary (unless you will keep adding performance parts every season) emoticon


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23/Jan/2006, 3:35 pm Link to this post Send Private Message MSN Blog
 
basshead Profile
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Date Registered: 02-2004
Location: Panania, Sydney
TOTAL POSTS: 2852
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Re: How to Reset/Reprogram your ECU - Series I


I thought I'd mention (as I don't think it has been before) that if you do a long trip, the ECU goes into an "economy" or "cruise" mode, and you may notice when you get back to the city that the performance appears to be alot better than before the long trip. Gradually the performance decreases until the ECU changes back to "city" mode. I noticed this more on my Pulsar, but haven't noticed it yet in the X-Trail. I don't know how much of this theory is true, but I've heard other people mention it on other forums, and after experiencing it myself, I figured there was some truth to it.

Apparently when the ECU is in "cruise" mode, the mixture is more lean, but I would've thought it would need to be more rich for all the stop-start city driving, and a too-lean mixture would be detrimental to the engine & performance.

The other theory was that the whole system just got a good clean-out while sitting on a constant RPM (while cruising at 100-110k's).


---
Rich. X-013(c)
'04 S2 ST Auto. Nudge_roofracks_tow_tints_Lightforce_GME_YokoGeoA/T-S_TBS_bashplate_50mm-spacer-lift
Click here to see >300MB of photos and videos All For His Glory.
23/Jan/2006, 5:28 pm Link to this post Send Email PM   Send Private Message MSN Yahoo Blog
 
Canadas FarEast Profile
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Date Registered: 10-2005
Location: Newfoundland Canada
TOTAL POSTS: 395
Reply | QUOTE
Re: How to Reset/Reprogram your ECU - Series I


quote:

NPC73 wrote:

As for seasonally resetting the ECU, I think this is just going over board, although is still a valid point. I guess this would depend on your location and the amount of fluctuation in air temperatures between the seasons.



Thanks for the help.

WRT your last point - we could go from + 25 to 30 in the summer to minus that same range in the winter.........



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Roger
X 228


2006 X-T Bonavista Edition
Production Number 0001

24/Jan/2006, 9:25 am Link to this post Send Email PM   Send Private Message
 
Canadas FarEast Profile
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Date Registered: 10-2005
Location: Newfoundland Canada
TOTAL POSTS: 395
Reply | QUOTE
Re: How to Reset/Reprogram your ECU - Series I


quote:

jalalski wrote:

The same applies to the CAI and other performance mods.

Basically, you just need to run the car 1 day with the upgraded parts fitted and then implement the "forced" ECU re-set.

Don't think the seasonal re-set in necessary (unless you will keep adding performance parts every season)



Just bought a CAI and that's what I was thinking - run it for a brief period and then do the re-set.

Plan on adding the Iridium plugs at about 25K (assuming I can get them by then) and would then do another re-set......

or, should I just let the ECU "detect" the difference ???






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Roger
X 228


2006 X-T Bonavista Edition
Production Number 0001

24/Jan/2006, 9:37 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: 29100
Reply | QUOTE
Re: How to Reset/Reprogram your ECU - Series I


Roger,

I don't think you need to do the ECU reset after adding the iridium plugs, but it wont hurt to do that anyway.

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24/Jan/2006, 9:42 am Link to this post Send Private Message MSN Blog
 


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