Cincyspecv

I was looking around on b15sentra.net and I found a post over there where a guy put a SAFC-II on his car and used an hour of dyno time to fine tune it. The Specs have the QR25de which is from the altima and a few other lines. Anywho, here is what he netted:

3000 +4.2HP +7.4Tq.
4800 +3.8HP +4.1Tq.
5200 +6.4HP +6.5Tq.
6000 +6.6HP +5.8Tq.

with the following settings:

1000 +2
1600 +4
2200 +4
2800 +4
3400 -4
4000 -6
4600 -7
5200 -7
5800 -7
6400 -7
7000 -7

and here is the post if you care to look:

http://www.b15sentra.net/forums/show...5&pagenumber=1

Anyways it might be worth looking into. You may be able to realize 10hp for $300ish.

Guru

iTrader: (9)

After dynoing a 350Z with a wideband O2, it can certainly benefit a great deal from fuel tuning unlike my GS400 who's AF mixture was darn near perfect from the factory except for the very top end.

12SecZ

If they made an English Manual for install I would buy it, to date no one can confirm the manual isn't still printed in Japanese.

I have heard about 10HP gains on the Z too and I want one.

z461

How about the SRT ECU?? My SRT Race ECU definately made a HUGE amount of power.. they dyno'd it at like 25RWHP..

Ricky

SRT ECU?? Swift Racing Tech.? Where did you buy it??

Ricky

Based on those testing settings, do you think his mpg decreased though? Plus it looks like he configured it for lower end power, is it possible to get a good configuration for mid-range/high end power?

Apexi350z

iTrader: (3)

execuse me.. can someone explain fully what does SAFCII do?

I think it probably change the fuel maps on selected rpm, is that the only thing it does? how hard is it to install it?

I thought our ECU is locked so we can't tune it? how does this change factory ECU setting?

thanks!

Apexi350z

iTrader: (3)

This is from edo performance:
http://www.edoperformance.com/forums/viewtopic.php?t=2

This following is the guide for the connecting the Apexi SAFC II to your cars' ECU based on non-KARMANN sensor:

Wire from SAFC II - ECU connection
Red - Power
Green - RPM
Purple - Knock Sensor
Grey - Throttle Position Sensor (TPS)
Brown - Ground
Black - Ground
Yellow - MAF output
White - MAF input

==============================================
For Karmann sensor based car:

Wire from SAFC II - ECU connection
Red - Power
Green - RPM
Purple - Knock Sensor
Grey - Throttle Position Sensor (TPS)
Brown - Ground
Black - Ground
Pink - MAF output
Orange - MAF input

rescube

What is KARMANN? Is the 350Z Karmann of non-karmann?

VandyZ

iTrader: (2)

Our ECU uses a CAN system. I would imagine you could monitor the things like knock, throttle position, RPM, speed, etc, however I am not for sure how the controller can fool the ecu with false signals to "tune." I am sure they have going in Japan but our ecu’s are different. The CAN system may prevent us from using AFC's unless there is a special one for our car. Anyone know for sure?

John

iTrader: (17)

It won't do anything for your fuel economy since dynoing is done under WOT. I think that on a stock 350Z, you'd see some gains, but you'd see more prior to adding on modifications.

SizongZ

iTrader: (1)

The S-AFC II is a piggy back unit that controls your air/fuel ratios.
APEX-i has not released the States version of the AFC II. It will be coming out sometime in June.
Note that if you are buying the S-AFC II online (i.e. Ebay) Apex will not warranty it or probably even acknowledge it.
It's a very nice unit. I'm waiting for mine from Apex but they are working on the English translations and want to finish that before they release it here in the States.
The S-AFC II controller here is the limited edition one in Japan

Chebosto

iTrader: (43)

the SuperAFC is pretty neat little gizmo. i have it for my Maxima.. the only thing is that if you just mess with the Fuel/Curve, it will inadvertantly adjust the timing with out you knowing it...
i noticed that with the Max... and you have the 'trick' the ecu with the throttle position percentages as so the ECU will add more fuel to compensate for the lean of the adjusted SAFC settings..


i heard that the super afc II has better data logging/replay and a shift indicator stuff too? imho.. its nice. but only will work well if you spend the time on the dyno to get it tuned perfect... otherwise its a nice $300 digital tach.

12SecZ

Yes they do make one specificly for the 350Z.

Everything else has been real good iand accurate info and confirmation, thanks.

SizongZ

iTrader: (1)

There isn't, to say, a specific one for the 350Z. It's a universal product. No what you can do is ask APEX-i what the settings are. But if you have any type of mods i.e. intake or exhaust, it won't work. I'm hoping that when APEX does release the S-AFC II that my car would be used to test... keeping my fingers crossed...

12SecZ

Well I guess I could call out a certian magazine for false advertisement but I am gonn a let that go.

What do you mean it won't work with modded cars?

WTF is it good for then?

VandyZ

iTrader: (2)

Not to confuse anyone with what I said earlier . . .the Z uses a "CAN" network which is new for 2003 Nissan ECU and components. I hear the 2004 will be even more CAN and will move beyond ODB-II. I have seen the magazine articles with the Z and Apexi SAFC on a Japanese version Z. I had called about a SAFC from Apexi and they suggested that I could view data but not change signals to make adjustments. They did say this would not be the case in the future. BTW, this was for the SAFC-2 from Japan. None of my information is confirmed, that’s why I ask whats up. Anyone know?

12SecZ

As far as I am concerned if it can't work with modded cars (stock only) it's worthless to me.

I wouldn't see abig market for this if that is true (which I doubt) needless to say *I* won't be buying one till it's confirmed.

I would go with a ECU or Programmer that *does* work with modded cars, that's the point of these type of Gizmo's.

How many stock only cars plan on tapping into their ECU for this?

Apexi350z

iTrader: (3)

I suspect none since most ppl who buys the SAFCII probably has some kind of intake of exhaust already. that's why they want more power!

TJZ

Why wont it work for modded cars? That makes no since. There's always room for improvement with A/F ratios and with a little dyno tuning it should be able to enhance the power your mods are currently making. Someone please correct me if i'm wrong.