5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.
View Poll Results: Are you interested in a reflash for your 5.5 gen?
Yes, quit baiting me and do it!
49
90.74%
No
5
9.26%
Voters: 54. You may not vote on this poll

Interested in 5.5 gen ECU reflash? I have good news coming soon...

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Old Jun 18, 2016 | 12:52 AM
  #1  
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Interested in 5.5 gen ECU reflash? I have good news coming soon...

A poll to start the hype
Old Jun 18, 2016 | 04:21 AM
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Originally Posted by Child_uv_KoRn
A poll to start the hype
Yup, what he said
Old Jun 18, 2016 | 05:12 AM
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Subscribed for moar
Old Jun 18, 2016 | 08:16 AM
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I may know something about this..

Last edited by murphys_law; Jun 18, 2016 at 08:26 AM.
Old Jun 18, 2016 | 08:44 AM
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Will I need to upgrade my ecu?

Do I have to reprogram my keys?

Will this eliminate my precats?

Do I need cams?

How many hp will I gain with my injen cai?


Just a handful of questions that may arise by this thread !!
Old Jun 18, 2016 | 08:46 AM
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Originally Posted by nestorlugo
Will I need to upgrade my ecu?

Do I have to reprogram my keys?

Will this eliminate my precats?

Do I need cams?

How many hp will I gain with my injen cai?
Cruising for a bruising
Old Jun 18, 2016 | 07:32 PM
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Originally Posted by nestorlugo
Will I need to upgrade my ecu?

Do I have to reprogram my keys?

Will this eliminate my precats?

Do I need cams?

How many hp will I gain with my injen cai?


Just a handful of questions that may arise by this thread !!
Hahaha, all important questions to raise.
Old Jun 19, 2016 | 07:40 AM
  #8  
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Please keep us posted on your progress. I'm highly interested in getting my done
Old Jun 22, 2016 | 07:33 PM
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A little teaser.

Can anyone tell me what this is?


Old Jun 22, 2016 | 08:30 PM
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Originally Posted by murphys_law
A little teaser.

Can anyone tell me what this is?



35° ignition timing up top @+2°
Old Jun 22, 2016 | 09:54 PM
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Originally Posted by nestorlugo
35° ignition timing up top @+2°
BZZZZZZZ. Ign timing doesn't drop.
Old Jun 23, 2016 | 11:33 AM
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Originally Posted by Child_uv_KoRn
BZZZZZZZ. Ign timing doesn't drop.
As a matter of fact on most cars it should increase as rpm increases due to the combustion process taking place in a shorter time, therefore necessitating more ignition advance to make the maximum cylinder pressure happen at the optimum time in the pistons travel and stroke.

Last edited by murphys_law; Jun 23, 2016 at 11:42 AM.
Old Jun 23, 2016 | 01:03 PM
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I would do it.... as soon as you can reflash our 5.5 ECU I will be one of the first to get it done...... I had my old 02 reflashed and it was great
Old Jun 23, 2016 | 01:36 PM
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Originally Posted by JonBlz
I would do it.... as soon as you can reflash our 5.5 ECU I will be one of the first to get it done...... I had my old 02 reflashed and it was great
It's not a "can" merely a when.

chikd_uv_korn and myself have already flashed several of the 5.5 6 speed ecus.

Last edited by murphys_law; Jun 23, 2016 at 01:42 PM.
Old Jun 23, 2016 | 04:30 PM
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Originally Posted by murphys_law
It's not a "can" merely a when.

chikd_uv_korn and myself have already flashed several of the 5.5 6 speed ecus.
how much?
Old Jun 23, 2016 | 04:55 PM
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Any potential problems with the re-flash?
Old Jun 23, 2016 | 04:56 PM
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Originally Posted by george__
how much?
That's what I want to know.
I have a 5.5 6 speed
Old Jun 23, 2016 | 06:09 PM
  #18  
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Originally Posted by losifanatic
That's what I want to know. I have a 5.5 6 speed
No pricing at the moment, still working on a few things. Shooting for the middle of July before anything happens.

Last edited by murphys_law; Jun 23, 2016 at 06:30 PM.
Old Jun 23, 2016 | 06:25 PM
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Old Jun 23, 2016 | 08:09 PM
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Originally Posted by nestorlugo
Old Jun 23, 2016 | 08:24 PM
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Originally Posted by Child_uv_KoRn


Yo I wonder who were the two azz holes who voted "NO"!!!

Fvckin noobs !!!!
Old Jun 24, 2016 | 04:39 AM
  #22  
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Originally Posted by fat_kid
Any potential problems with the re-flash?
Added horsepower and torque .
Old Jun 24, 2016 | 07:32 AM
  #23  
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Originally Posted by murphys_law
A little teaser.

Can anyone tell me what this is?


IVT, and it's already better than stock.... since it looks strikingly familiar to this.




Most say the Z33 has this to "compensate" for it's single stage IM.


Here's a comp of stock FWD IVT vs modified (Z33 style).









Originally Posted by nestorlugo
35° ignition timing up top @+2°
It does drop @ peak torque, but rises thereafter.



Old Jun 24, 2016 | 07:36 AM
  #24  
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Originally Posted by NmexMAX
IVT, and it's already better than stock.... since it looks strikingly familiar to this. Most say the Z33 has this to "compensate" for it's single stage IM. Here's a comp of stock FWD IVT vs modified (Z33 style). It does drop @ peak torque, but rises thereafter.
Correct, and correct.

Here's a 3D view of the "improved" cam timing.



3D view:

Last edited by murphys_law; Jun 24, 2016 at 08:16 AM.
Old Jun 24, 2016 | 08:33 AM
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Explain all 3 dims, I'm good with 2 .. and the 3rd?
Old Jun 24, 2016 | 02:07 PM
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Originally Posted by nestorlugo
Yo I wonder who were the two azz holes who voted "NO"!!!

Fvckin noobs !!!!
Probably our resident "A33 TECH".
He's worried that this will stop the fuses from filtering amperes, split your battery and cause the motor mounts to fail.
Old Jun 24, 2016 | 02:52 PM
  #27  
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lols

can i vote no if i don't have a 5.5 gen?
Old Jun 24, 2016 | 03:03 PM
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Originally Posted by cornholio
lols

can i vote no if i don't have a 5.5 gen?
If you do, you'll be banned from the 5th gen section
Old Jun 24, 2016 | 03:17 PM
  #29  
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Originally Posted by NmexMAX
Explain all 3 dims, I'm good with 2 .. and the 3rd?
RPM, Degrees, and the one I'm sure you're wondering about is Load(or more specifically Base Fuel Schedule, which is essentially load.)
Old Jun 24, 2016 | 08:57 PM
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Would this fix the TB from being partially closed at full throttle?
Old Jun 25, 2016 | 07:51 AM
  #31  
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Bits incoming
<iframe width="420" height="315" src="https://www.youtube.com/embed/T_WWtxcbh6M" frameborder="0" allowfullscreen></iframe>

Last edited by murphys_law; Jun 25, 2016 at 10:18 AM.
Old Jun 28, 2016 | 11:37 AM
  #32  
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At this point, timing, rev limits, electronic throttle, intake cam timing, fuel target(AFR), fuel compensation, idle target, and MAF transfer function are all editable, and more importantly flashable. This should allow 99% of applications to be tuned(extreme FI combos can be tuned, but not 100% like I would like, YET.) There are a few other things I am working on at the moment that would allow even more power. Not bad for the short amount of development time.

Last edited by murphys_law; Jun 28, 2016 at 01:26 PM.
Old Jun 28, 2016 | 03:43 PM
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Can't wait for my ECU swap!!!
Old Jun 28, 2016 | 04:37 PM
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Originally Posted by murphys_law
At this point, timing, rev limits, electronic throttle, intake cam timing, fuel target(AFR), fuel compensation, idle target, and MAF transfer function are all editable, and more importantly flashable. This should allow 99% of applications to be tuned(extreme FI combos can be tuned, but not 100% like I would like, YET.) There are a few other things I am working on at the moment that would allow even more power. Not bad for the short amount of development time.


Exactly what I want... subscribed in for the constant updates i will do this
Old Jun 28, 2016 | 06:22 PM
  #35  
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I'm down for some of this. :-D
Old Jun 29, 2016 | 07:10 AM
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Originally Posted by murphys_law
RPM, Degrees, and the one I'm sure you're wondering about is Load(or more specifically Base Fuel Schedule, which is essentially load.)
I was under the impression that load was defined as airflow (maf signal/gm/s), RPM, and throttle angle?

FSM says [“Calculated load value” indicates the value
of the current airflow divided by peak airflow.] But I always remember somewhere they mentioning throttle angle. Either way, re-defining it to sa more useful thing is better.

Yeah this is all good news.
Old Jun 29, 2016 | 07:19 AM
  #37  
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Originally Posted by NmexMAX
I was under the impression that load was defined as airflow (maf signal/gm/s), RPM, and throttle angle? FSM says [“Calculated load value” indicates the value of the current airflow divided by peak airflow.] But I always remember somewhere they mentioning throttle angle. Either way, re-defining it to sa more useful thing is better. Yeah this is all good news.
That's not an incorrect statement as all those things are factored in to get the "base fuel schedule." The reason base fuel schedule is used is because it is how the ecu tables are setup.
Old Jun 29, 2016 | 12:53 PM
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I'm in!
Will we have to send the ECU in to you?
Old Jun 29, 2016 | 01:56 PM
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Originally Posted by Derrick2k2SE
I'm in!
Will we have to send the ECU in to you?
That would be the cheapest option. I'm sure we can acquire ECUs and send one, but then you would have to program the keys and it would be costlier.
Old Jun 29, 2016 | 02:32 PM
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Cool, I have two ECUs and can program them back and forth in a few minutes.



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