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Hey all,

I've been reading about the timing advance and ECU resets over at clubtitan.org. Some pretty interesting stuff! SCR38 can I'm sure answer any tech questions (as he's the guru here) but I wanted to post these procedures for our site as well.

Apparently what happens is that the ECU in our vehicles "learns" how you drive, and over time you can lose some horsepower/torque if you don't drive the vehicle hard for a period of time. These procedures will reset the ECU back to stock specs and can get you back any lost horsepower. The concensus is that this is a good thing to do from time to time to set everything back to "default". These instructions were found over at the technosquare website- an authority on performance. That said, here you go:

From Technosquare website:

Please read all instructions and be familiar with them before any attempts.
A stop watch or an analog clock with a second’s needle will be useful.

ECU Resetting Procedures

Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

Accelerator Pedal Release Position Learning
Operation Procedure

1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.

Throttle Valve Closed Position Learning
Operation Procedures

1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning (Throttle Position Learning)
It is better to count the time accurately with a clock.
Operation Procedures
1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications.

I just did this on my Armada and will report back if there's any noticeable difference.
 

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Just did this today and boom, runs like a raped ape. Turned off the VDC and did a few peelouts with the 20s. Nice. :teeth: :excellent

Any idea how often you should do this to maintain the original settings. I know the brain "learns" your driving habits and adjusts accordingly. Also, is it based on mileage or number of times it is started. Since I try to use cruise a lot to save fuel on the highways, I would think if it is by miles this would need to be done often. Thanks ;)

BTW, if you haven't tried this yet and your Mada is broken in, give it a shot. I broke mine in really gently and as a result it was a kitten, not a tiger. Now to try it on the G35. :thumbup:
 
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LOL definetly try on the G35 well when i got time im gonna go try on the Q. O triple you gotta post some vids of your peel outs n crazy $hit
 

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Just did this today and boom, runs like a raped ape. Turned off the VDC and did a few peelouts with the 20s. Nice. :teeth: :excellent

Any idea how often you should do this to maintain the original settings. I know the brain "learns" your driving habits and adjusts accordingly. Also, is it based on mileage or number of times it is started. Since I try to use cruise a lot to save fuel on the highways, I would think if it is by miles this would need to be done often. Thanks ;)

BTW, if you haven't tried this yet and your Mada is broken in, give it a shot. I broke mine in really gently and as a result it was a kitten, not a tiger. Now to try it on the G35. 👍
Hey all,

I've been reading about the timing advance and ECU resets over at clubtitan.org. Some pretty interesting stuff! SCR38 can I'm sure answer any tech questions (as he's the guru here) but I wanted to post these procedures for our site as well.

Apparently what happens is that the ECU in our vehicles "learns" how you drive, and over time you can lose some horsepower/torque if you don't drive the vehicle hard for a period of time. These procedures will reset the ECU back to stock specs and can get you back any lost horsepower. The concensus is that this is a good thing to do from time to time to set everything back to "default". These instructions were found over at the technosquare website- an authority on performance. That said, here you go:

From Technosquare website:

Please read all instructions and be familiar with them before any attempts.
A stop watch or an analog clock with a second’s needle will be useful.

ECU Resetting Procedures

Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful.

Operations Procedures

1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds.
2a. Fully depress the accelerator pedal (HARD).
2b. Fully release the accelerator pedal.
3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking.
4. Fully release the accelerator pedal (while the CEL is still blinking)
5. Wait about 10 second.
6. Fully depress the accelerator pedal and keep it for more than 10 seconds.
7. Fully release the accelerator pedal (The CEL light will continue to blink).
8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

Accelerator Pedal Release Position Learning
Operation Procedure

1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.

Throttle Valve Closed Position Learning
Operation Procedures

1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning (Throttle Position Learning)
It is better to count the time accurately with a clock.
Operation Procedures
1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications.

I just did this on my Armada and will report back if there's any noticeable difference.
I have gone thru this procedure multiple times and each time the CEL stops blinking before the last 10 sec step. Could this mean my ECU is bad?
 

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Just so i understand the ECU reset procedure correctly. During the throttle position learning, and throttle valve closed position learning the throttle pedal is never depressed during these operations. I ask bc with some vehicles the throttle plate needs to move its entire range to calibrate it properly.
 

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Thank you.

Hi Folks, I recently acquired a 2011 Armada Platinum with a little over 100,000 miles on it. I've recently done a bunch of work to it including a spark plug change, MAF cleaning and air cleaner replacement. I would like to reset the ECU/Throttle. I've seen a few different procedures online and wonder which would actually be correct for this vehicle as I don't want to screw things up. Thanks!
 

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are you having issues getting the procedure done? if so you needed to understand timing is very critical. maybe use a stopwatch if you feel you must but this procedure is how to do it without the CONSULT tool that nissan use to do this. ive done this across 2 armadas and a qx with success each time.
 

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Thanks for combining the thread. Yeah, I tried it once but without a stop watch so I need to give it another shot with more accurate timing. I had seen two different ways to do it, I'll use the method above in a few days and reply to this thread re my success or lack there of at that point.
 

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i can speak on confidence that this works because ive done it on 3 different nissan vehicles. this was originally posted at titan talk and it was also copied here. timing is VERY critical.
 

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Just did the reset with a watch, worked like a charm. Thanks!
 

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Would this reset help with MPG? I got my Mada a few months ago and can tell that the previous owner did not take of her well. I've done oil flushes, new spark plugs, new air filter, drivetrain flushes, but still averaging 11-12MPG combined. I'm planning on cleaning the MAF and throttle body today, then maybe do the reset.
 

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I finished my reset last night and just drove the vehicle for about 15 minutes. I noticed an increase in throttle response and a slight increase in mid range RPM power and am happy I did the reset. The ECU is adaptive so mine had likely been adapted to the previous owners driving style for the last 100,000 miles. Hard to say about the fuel mileage going forward. One thing that helped my fuel mileage a bit was running 45 psi in all four tires, the handling improved as well due to the reduction of tire side wall roll when cornering.
 

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I was wondering if i can rest the systems ecu with a blue driver if i just turn the code of if it resets the computer of if i have to do the gas pedal 5 times trick thanks for your input
 

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Just last week I successfully reset mine using this procedure. It was easy and it was necessary to use a watch with a second hand to get the time intervals correct. Worked like a charm, good luck with yours!
 
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