APEXi S-AFC vs. V-AFC vs. V-AFC II
10-09-2009, 06:24 AM
#1
APEXi S-AFC vs. V-AFC vs. V-AFC II
what are the differences between the three all i know is the vafc's have more tuning capabilities. What is more suitable for our cars? Im planning on headers and full exhuast, so im gonna need a tune.
10-09-2009, 07:22 AM
#2
I believe VAFC2 has more tuning points.
As for the SAFC, it cannot adjust what time your variable intake opens but the VAFCs can.
Also if you need a tune you'll need a wideband O2 sensor.
How about the e-Manage Ultimate? This system can let you tune off your laptop and has more features/resolution than the AFCs which will net you better gains when you tune the car.
As for the SAFC, it cannot adjust what time your variable intake opens but the VAFCs can.
Also if you need a tune you'll need a wideband O2 sensor.
How about the e-Manage Ultimate? This system can let you tune off your laptop and has more features/resolution than the AFCs which will net you better gains when you tune the car.
10-09-2009, 07:51 AM
#3
http://forums.maxima.org/all-motor/3...mt-6-7-eu.html
click clack
your welcome.. searching works wonders... click on the sticky in the 5g forums that is called 5gen modifications..
click clack
your welcome.. searching works wonders... click on the sticky in the 5g forums that is called 5gen modifications..
10-09-2009, 06:47 PM
#4
I believe VAFC2 has more tuning points.
As for the SAFC, it cannot adjust what time your variable intake opens but the VAFCs can.
Also if you need a tune you'll need a wideband O2 sensor.
How about the e-Manage Ultimate? This system can let you tune off your laptop and has more features/resolution than the AFCs which will net you better gains when you tune the car.
As for the SAFC, it cannot adjust what time your variable intake opens but the VAFCs can.
Also if you need a tune you'll need a wideband O2 sensor.
How about the e-Manage Ultimate? This system can let you tune off your laptop and has more features/resolution than the AFCs which will net you better gains when you tune the car.
i would but i can't seem to find them in my price range. i found a vafc2 for 120 in close to new condition.
10-09-2009, 06:53 PM
#5
lemme ask i semi noobish question... whats up with the Apexi Neo??? never really heard anybody talked about that one... is it just a colored screen difference or is there more cause im thinking of swapping with my friend lol
10-09-2009, 07:19 PM
#6
The AFC-neo is a multifunctional sub-computer that allows the tuner to fine-tune air-fuel ratios, calculate MAF/MAP transfer functions, control VTEC or other solenoids, address stall issues associated with open-air blow off valves, and monitor key ECU data.
Changes in air-fuel ratio are achieved by correcting the airflow sensor signal or pressure sensor signal at 16 different RPM points, and at high and low throttle positions, all of which can be moved according to the customers needs. By changing this input signal, the tuner can alter the injector pulse width as calculated by the ECU.
The AFC NEO is unique in the sense that it has a built in MAF/MAP transfer function, which is necessary when the tuner swaps MAF/MAP sensors from one vehicle application to another. By setting the sensor IN and OUT to the appropriate sensor numbers, the AFC NEO can act as a translator/emulator unit, eliminating the need for costly sensor or ECU reprogramming.
The unit also has a VTEC solenoid control function that allows the tuner to change the VTEC engagement/disengagement point on Honda VTEC systems (not compatible with iVTEC systems). The VTEC solenoid control and also be used to control other types of solenoids as used in nitrous-oxide and water/methanol injection systems.
On MAF applications with open-air blowoff valves, there is a deceleration air correction feature that allows the tuner to compensate for the over-rich condition that occurs at throttle-off. By adjusting the MAF signal at throttle-off condition, the tuner can reduce the amount of fuel injected and prevent stalling.
In monitor mode, the driver can monitor digital engine RPM, throttle position, battery voltage, airflow sensor capacity usage, pressure sensor data, Karman frequency, MAF/MAP/Karman correction factor, and solenoid on/off status.
The AFC NEO is a universal unit that can be used on a wide range of cars and trucks that have an air metering system that uses a VAF, MAF or MAP sensors operating within the 0-5 volt range, as well as applications using Karman sensors. There are some unique applications that do not allow for the proper functioning of the AFC NEO. If you are not sure, please contact Apex for assistance.
10-09-2009, 09:07 PM
#8
No I/J adjustment, no timing, no launch control, no care
Seriously though NEO would be a waste of money. VAFC should be just fine for AFR tuning.
10-10-2009, 06:21 PM
#9
picked up the VAFC2 today for 120. its almost spotless except for that faint scratching that occurs on plastic display screens and what not..comes with a stand too but to my knowledge i'm also going to have to pick up a wideband 02 sensor. is this correct? i was told that if i wanted to operate the vafc by myself id need the wideband otherwise a shop would have to tune it.
10-10-2009, 06:23 PM
#10
what it is really is just a newer version of the vafc2 that has all the afc tuning options in it. (safc's too)
10-10-2009, 06:26 PM
#11
btw grandhustle how do you like your ebay catback. i figured i'd ask since OBX headers are next on my list. i was thinking catback straight-pipe unless the ebay catbacks were decent.
10-10-2009, 06:32 PM
#12
i dont have an ebay catback... if you are talking about the tips i have then i'd say dont do it... you can prolly pass with the obx dual tip but not worth it IMO... straight pipe is also like the Neo vs VAFC on N/A you make nothing but sound... get the expensive cat or dont change your stock one, trust me i gurantee you if u go headers u will grow to hate straight pipe
10-10-2009, 06:35 PM
#13
IMO it's a waste of our time. The only thing I see from that is you can run N2O solenoids off of it as if they're VTEC solenoids.
No I/J adjustment, no timing, no launch control, no care
Seriously though NEO would be a waste of money. VAFC should be just fine for AFR tuning.
No I/J adjustment, no timing, no launch control, no care
Seriously though NEO would be a waste of money. VAFC should be just fine for AFR tuning.
10-10-2009, 06:48 PM
#14
my faultt about the exhuast i mistook intake for exhuast and thanks...
about the neo...if its free then hell yea brand new its 400+
10-10-2009, 07:05 PM
#15
its not really free... he would sell it to me for VAFC price, so ill just sell my VAFC for it, but is it worth it... know what, ill keep my VAFC... make sure when you do any custom exhaust get a 22" resonator... again dont fall for the whole straight pipe thing, u make no extra power, not in a maxima anyways... may get lucky and make 1whp or set some kinda record with 2-3 lol
10-10-2009, 07:17 PM
#16
its not really free... he would sell it to me for VAFC price, so ill just sell my VAFC for it, but is it worth it... know what, ill keep my VAFC... make sure when you do any custom exhaust get a 22" resonator... again dont fall for the whole straight pipe thing, u make no extra power, not in a maxima anyways... may get lucky and make 1whp or set some kinda record with 2-3 lol
. and id keep the vafc if you gotta pay. its not worth it in that casewhich wideband 02 sensor do i need? im have trouble tryin to figure which is applicable
10-11-2009, 05:36 AM
#20
2 seperate pieces.. wideband and piggy back... any wideband should work..there are a select few that have logging ability....basically for a ''street'' tune.. on a given 3rd gear or w/e pull (4th is too dangerous) you can log your a/f using your wideband.. then tune accordingly by giving or taking fuel at different set rpm points... hope that clears things up..
..safcII FTW
..safcII FTW
Last edited by mist max2000; 10-11-2009 at 05:38 AM.
10-11-2009, 02:36 PM
#22
2 seperate pieces.. wideband and piggy back... any wideband should work..there are a select few that have logging ability....basically for a ''street'' tune.. on a given 3rd gear or w/e pull (4th is too dangerous) you can log your a/f using your wideband.. then tune accordingly by giving or taking fuel at different set rpm points... hope that clears things up..
..safcII FTW
..safcII FTW
i gotchaaa but is there a specific type of gauge or meter i should be looking for?
10-11-2009, 10:37 PM
#23
Does anyone know if this works for us as well as the 4th gens?
http://www.vqpower.com/v2/articles.php?article_id=98
If not would anyone happen have a writeup or diagram thats a bit easier than the APEXi one? lmao
http://www.vqpower.com/v2/articles.php?article_id=98
If not would anyone happen have a writeup or diagram thats a bit easier than the APEXi one? lmao
Last edited by tooreckless00; 10-11-2009 at 10:40 PM.
10-11-2009, 10:39 PM
#24
I have the AEM UEGO and it came with the sensor and gauge. The Innovate LC-1 is the same deal.
That VQpower writeup is the right idea but the ECU pinouts are different on fifth gens.
10-11-2009, 10:43 PM
#25
Wideband O2 kits will usually come with the appropriate meter so you won't have to worry about that.
I have the AEM UEGO and it came with the sensor and gauge. The Innovate LC-1 is the same deal.
That VQpower writeup is the right idea but the ECU pinouts are different on fifth gens.
I have the AEM UEGO and it came with the sensor and gauge. The Innovate LC-1 is the same deal.
That VQpower writeup is the right idea but the ECU pinouts are different on fifth gens.
Why thank you. those were the two i was looking at in fact..and
whats the best route to go for wiring this because nobody wants to screw up their maxima
10-11-2009, 10:45 PM
#26
The simplest way is PM MOHFPro90, he makes plug and play harnesses for the VAFC. He made mine for my e-Manage Ultimate and it's so easy a 3 year old can hook it up.
10-12-2009, 12:52 PM
#28
10-18-2009, 05:15 PM
#30
10-19-2009, 07:51 AM
#31
http://forums.maxima.org/5th-generat...g-diagram.html
From:
http://forums.maxima.org/6887470-post12.html
And many other links there that might help.
Last edited by Puppetmaster; 10-19-2009 at 07:59 AM.
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01-06-2010, 06:59 PM
#33
What would the dyno charts look like with a safc 2. I know it really helps fix the a/f when doing headers, but Im wondering if the power vs $ is worth it if I do not have headers.
Sorry to bump old thread.
Sorry to bump old thread.
01-06-2010, 07:41 PM
#35
Seeing as how you don't have headers it's probably not worth the gains vs. money because the SAFC has no way to datalog, AND you need a wideband. Which basically means you need to buy a wideband O2 sensor to monitor AFR, and then datalog it to your laptop, and also then buy an RPM signal converter so you can graph the tach signal on your AFR datalogs.
Unless you buy a UTEC...
then you can datalog everything on board using TurboXS wideband IIRC.
01-06-2010, 07:47 PM
#37
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Using UTI-ME you can also autotune your fuel maps within 3-4 pulls.
It's tough to install, but worth it in the long run.
01-06-2010, 07:47 PM
#38
01-06-2010, 07:52 PM
#39
VQ fuel maps are tuned pretty rich at WOT I believe, so you can gain some horsepower by leaning it out to a 12.8-13.0 AFR, and by leaning it out on an SAFC you actually increase the ignition timing in the process.
Seeing as how you don't have headers it's probably not worth the gains vs. money because the SAFC has no way to datalog, AND you need a wideband. Which basically means you need to buy a wideband O2 sensor to monitor AFR, and then datalog it to your laptop, and also then buy an RPM signal converter so you can graph the tach signal on your AFR datalogs.
Unless you buy a UTEC... then you can datalog everything on board using TurboXS wideband IIRC.
Seeing as how you don't have headers it's probably not worth the gains vs. money because the SAFC has no way to datalog, AND you need a wideband. Which basically means you need to buy a wideband O2 sensor to monitor AFR, and then datalog it to your laptop, and also then buy an RPM signal converter so you can graph the tach signal on your AFR datalogs.
Unless you buy a UTEC...
then you can datalog everything on board using TurboXS wideband IIRC.Thanks for the info greatly appreciate it.
Headers would be cheaper
but the labor involved kills it for me.
