Hey Carlo, they actually dont offer it on the HR motors. It was only really for the DE and Rev up. The HR seems to operate normal with no delay...

 

Ma porc$azz palett%azzzz..... (some italian "bad words", i hope not a lot of italian people is here...)

Thanks for the info, i'm going mad searching something that does not exist !

If you came in Italy a big beer is waiting...

 

Logging pedal position vs tps, throttle goes wide open assuming 4.2ish volts is wot pretty much at all rpms. They start to shut at 7400 on hr.

 

this is a copy paste from my email with Jared last June 2011

From: jared@uprev.com
Subject: Re: Bug with 1EA4A 370z 2009 (Urgent)
Date: Wed, 8 Jun 2011 11:04:50 -0500
To: xxxxxxxxxxxxxxx

Actually, you're not even supposed to be able to see MAF 2. Not sure why it started showing up, the developers must have broke something. We had them both in there before, but there were a few dumb asses out there who were tuning one and not copying it into the other.
I added a bug ticket to our tracker to have our developers add a new check box to the "options" window so that you can disable the function that copies MAF 1 into MAF 2 when you save the ROM.
Our developer is out on vacation until the end of the week next week, and he'll be slammed with a bunch of stuff when he gets back, so I wouldn't expect him to have this fix ready for at least 2 or 3 weeks.


I'll have to take a closer look at different gears the next time I have a 370Z or G37 on the dyno. We haven't seen any other AF correction tables or anything outside of the main and cold ones. I'll have to see what I can reproduce on the dyno.

Jared Ainsworth

===============

then I sent him another email about this later on in June/July and still nothing has ever come up with that other than having my bug sticked to a higher priority

so we end up with not having a very nice feature to tune both MAF to have a more stable AFR from bank to bank...

I came back from exercise (military) and now that I came back ,, MAF 2 disappeared ... great

I still see a difference from up to 1.5 afr and I cant just adjust with the Cylinder trim ... since at low rpm BANK 1 is richer than BANK 2 then in the upper ROM it become leaner than BANK 2
not good with Ign timing because the ECU is pulling ign timing

 

Adjust the cyl. trim so A/F are even at WOT. Don't worry so much about lower loads, the ECU will automatically trim most of that.

I kind of doubt the ECU drives each bank from it's respective MAF, since the intakes are basically joined in the plenum.

 

I find the ECU isn't trimming most of that ...
thats the reason why Ive been asking them to make the MAF2 tunable again like they said it was when they came up with MAF2

I would prefer to fix the real problem than having half of it relatively ok..

 

How do you know each MAF can drive each bank independently? Are you saying it used to fix your issue, or are you 'hoping' it will?

 

Jared told me himself that it was working before but people wasnt tuning MAF2 when they were doing their MAF tuning.
that was causing a lot of problem and they (Uprev) decided to make the copy over MAF 2 automaticly when you save the rom ...

the email he wrote me last june ,,, we came up that it would be a good idea to have a check box to remove the auto-copy on MAF 2 , so us that wanto tune the MAF table ,could be possible
I guess they scrapped that idea

 

I don't know if UPREV ever concluded that Bank1 and Bank2 maf sensors are only and directly trim to their respective bank. If they are, i agree that it would be useful to have the separate tune-ability on each one. Also if your A/F are off up to 1.5 AFR from bank to bank you have something else going on. Maybe a skewed sensor or an exhaust leak or something. I have tuned dozens and dozens of 2 maf cars and i have never seen it off more the .5ish AFR.

 

That's what I was thinking, something else has to be going on... even on my lowly DE with the notoriously lean bank1 the ECU can fully correct it in closed loop and I'm within within 0.5 in open loop / WOT.