Nissan 370Z Forum - ECU ; stock ECU Vs Nismo ECU difference

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- - ECU ; stock ECU Vs Nismo ECU difference (http://www.the370z.com/tuning/84786-ecu-stock-ecu-vs-nismo-ecu-difference.html)

great information, could you tell us if the nismo map has same or different throttle map? :)

Nice! I haven't opened up my rom editor in a while, I hope Tuner has the Brake/Throttle limiter option when I do :)

Quote:

Originally Posted by bleunetizen (Post 2679762)

great information, could you tell us if the nismo map has same or different throttle map? :)

yes from the 2 files I compared, they both share the same throttle table map.

Hi,

Thanks for sharing. May I know how the VHR Timing Correction work with the main ignition tables?

Quote:

Originally Posted by Megan370z (Post 2656992)

This is something an aggressive bolt-on/custom and loud setup might want to look at. The stock Knock sensor are very sensitive and can be trigged by outside noise than an actual Ping/Knock

Knock Thresholds
http://www.the370z.com/members/megan...thresholds.jpg

There is 3 different Map for every MAP (5 total using the cruise bottom)
Cold / Main / High Det.
http://www.the370z.com/members/megan...ck-windows.jpg

VHR Timing Correction
This is the setting that every Tuner/Pro Cable should have got since the beginning.
From the Uprev Email Update, There is 2 map call VHR Timing Correction and they act similar to the Fuel compensation
10pts is about 1 actual degree from what I can remember on that email
and Negative Number can be added (very nice feature for the FI peoples, according to Uprev.)
http://www.the370z.com/members/megan...ection-1-2.jpg

EDIT ; This is a copy paste of the email sent on 16 Nov 2013

Hello all,

As many of you have noticed, there are some new tables being added to the latest VHR ROMs labeled "VHR Timing Target". The label is going to be changed to "VHR Timing Correction" in the next release since that better describes what these tables represent. These new tables work very much like the "Fuel Correction" tables except they change the ignition, meaning that increasing the values will increase timing and decreasing the values will decrease the timing (you CAN run negative values in these tables to reduce the timing for forced induction). We found that these new tables have a greater effect on the actual timing run compared to the older "burn time" tables that we've been using since before VVEL came along. Using these new tables we were able to get the advance on our test 370Z up to 32 DBTDC and make an additional 8WHP. Using the old tables we could not get the ignition above 28 DBTDC. Although these tables are more effective they are at the same time LESS sensitive. It takes about 10 points in the table to get a 1 degree change in timing advance. We will be working on adding these new tables to real time tuning over the next several months, but for now they are being made available as static tables.
You may also notice that the VHR ROMs have a "knock threshold" table, and new knock logging parameters. The knock threshold table represents the knock sensor sensitivity by RPM. Decreasing the values will make the knock sensor more sensitive and vise versa. The knock strength parameter works much like it does on the older ECUs.

We've also launched a "ROM dump" web page that we'll now be using to capture ROM dumps and vehicle information. We'll no longer be accepting ROM dumps via the ROMs@UpRev.com email. If you email a ROM dump to us we'll just refer you to the new page. This new method should reduce ROM patch turnaround time and make it easier for everyone. You can find it at this link:

ROM Dump Form

- Jared

Quote:

Originally Posted by blumango (Post 2687881)

Hi,

Thanks for sharing. May I know how the VHR Timing Correction work with the main ignition tables?

if you read the green part that I wrote down ( copy / paste ) of the email between me and Jared (Uprev)
You should understand and that would give an answer to your question.

from what I can understand is our Ignition Table we were using in the pass work more like a Timing Target Table similar too the AFR target Table.
and the new VHR Timing correction act like the fuel compensation.

they had a much better control if/or absolute control over the IGN timing with the new table added.

In my opinion the new VHR Timing correction table should have been available since the very beginning because I always complained about the current (now old) Ign timing table to not exactly do what I wanted over and over.

I hope this answer your question .

Quick question, the roms that i have (old) do i now have to get new VHR roms in order to have this applied? I have tuner version.

Quote:

Originally Posted by DOOMMONKEY777 (Post 2690838)

Quick question, the roms that i have (old) do i now have to get new VHR roms in order to have this applied? I have tuner version.

I'm not sure if I understand correctly your question,

Are you saying you have the tuner version, meaning you have the tuner cable and your Rom that you flashed into your car ?
If this is the case, update the Rom editor, open it up then look at your ROM if you can see the new table. Then adjust it on the dyno ;)

the new table is not new by itself, its always been hidden in the Rom but Uprev didn't found it until last year which they gave us access to.

I have no idea if the new Table can be viewed by the Tuner cable or not. I would assume you could.

I just havent had the chance to play with it lately thats why i asked. Cuz i saw u say VHR rom, thats why i assumed i had to get new roms or something thats why i asked, but wasnt sure if that update is the only thing that is needed. Ty

Quote:

Originally Posted by DOOMMONKEY777 (Post 2690919)

ok,,, you just need to do an Uprev update... your *old* rom is still the right one.
Let me know if you can see the new Table ;)

Quote:

Originally Posted by wstar (Post 2679854)

Nice! I haven't opened up my rom editor in a while, I hope Tuner has the Brake/Throttle limiter option when I do :)

FYI, this was in there in Tuner, and it really made a difference in my brake/throttle transitions last weekend at COTA (I still suck at them, but at least the car isn't the problem anymore!).

I was wondering about timing table main btw 2400-2800 rpm why is there such timing drop then pick up @ 3200 and so on. Is that where the throttle lag was reported, if i smooth out that curve will it be gone??

Quote:

Originally Posted by DOOMMONKEY777 (Post 2691334)

That's your idle/cruising area which will affect your fuel consumption. and it's not part of your throttle lag issue peoples talk sometimes.

a far as smoothing it out, I don't want to maybe look mean but I'm not here to give tip for tuning on anybody cars...
Hope you understand.

Its when i floor it, there is like wft? Where's the torque? Which happens at those rpms and then torque is back again @3k rpm

Quote:

Originally Posted by DOOMMONKEY777 (Post 2693886)

Its when i floor it, there is like wft? Where's the torque? Which happens at those rpms and then torque is back again @3k rpm

a good tune in the lower rpm will fix most of that problem ;)