APEXi S-AFC II

[slickef]

Has anyone used this computer, it is a piggy back computer and i just wondered if anyone has used these on thier EF and could give me any info of what thier like. They seem pretty good for $550

[Mr_4.0]

thats interesting. ive never heard of them. would be good to see how tunable they are for that price. and whether its a chip or something?

[Sorted]

It Looks Pretty



APEXi S-AFC II
(Air/Fuel Ratio Controller)

The Super AFC II (Air Flow Converter) is the industry standard for sub computer fuel control. The S-AFC II is designed to fine tune and "squeeze" power out of existing engine setups by allowing the user to modify the fuel curve with precision accuracy. Since the act of simply bolting on performance products does not make maximum horsepower, the S-AFC II allows the user to calibrate the fuel system in accordance with performance upgrades as they are installed. The AFC modifies the air flow meter/ pressure sensor signal voltage going to the factory ECU (Engine Control Unit) to change the amount of fuel injected. The S-AFC II utilizes a VFD (Vacuum Florescent Display) to display critical data in three different modes.

Features for the S-AFC II include:
Newly designed case and user interface, single button menu navigation, 12 point fuel correction in 200 RPM increments, data storage for two different correction maps, password protection, integrated knock monitor, and 4 different display options.

The S-AFC II, while not completely universal, comes preprogrammed with 15 of the most commonly used air flow meter/pressure sensor maps. By setting the AFC to one of these programs, the user is able to adjust injected fuel amounts by +/- 50%. 12 user defined RPM adjustment points allow for fine tuning in 200 RPM increments. Fuel can also be adjusted for part or full throttle situations.

The Deceleration Air Flow Correction cures erratic idle problems for Hot Wire vehicles equipped with an open atmosphere blow off valve. The S-AFC II can also display an incredible amount of data including: Air Flow Capacity (Hotwire and Flap Type only), Engine RPM, Throttle Position, Pressure Sensor voltage, Karmann Frequency, and Air Flow Meter Correction.

The S-AFC II displays data in three different modes: Numerical, Analog, and Graph. Numerical Mode allows the user to monitor up to four different parameters in numbers and also shows peak hold values on demand. The Analog Mode displays up to two values in an easy to read meter style display. Peak Hold is also included in this function. The Graph mode offers real time graph plotting with a Ghost map trace feature built in. The graph can replay movement up to 60 seconds.

CONCEPT
Piggyback Fuel Computer with 12 correction points in 200 RPM increments.

CHARACTERISTICS
Modifies air-flow meter signal (pressure signal in some vehicles) to optimize fuel-air ratio; Vacuum Fluorescent Display (VFD).

[slickef]

its just a piggy back computer thats able to be self tuned from your own laptop and can change air/fuel maps and stuff like that, so it does most of the stuff a chip can do and it looks good doing it

[eed-250]

it doesnt work on our ECU's

[Mr_4.0]

ah i have seen one of these in an r33.

[Felony]

Its a ricer tool plain and simple....

[galapogos01]

Originally Posted by eed-250

it doesnt work on our ECU's

you sure? it says "pressure sensor", assuming MAP? AFM mode might be suited to use on a V8's MAF...

[BLKPHN]

APEXi speaks japanese the sensor speaks english, just wont work!!!

[DUMTEB]

i had the older model of one of these in my skyline, it worked well, but i dont think it would work in a falcon

[Gohan]

wont work due to differant connections and being made to run anything from Supras and 300ZX's but the thing is Apex stuff like Power FC can just "plug in and play" and its a learning ECU but wont work on American or Australian stuff its like tryin to Stuff a V10 in2 a EL Falcon

[4.9 EF Futura]

Originally Posted by Felony

Its a ricer tool plain and simple....

That's probably a bit harsh. They do work well in certain applications.

I think you'll find the AFC is incompatible with the Ford EEC system.

It intercepts the MAP signal, modifies it and sends the altered signal on to the ECU... however i think the jap MAP systems work on a voltage modulation, a Ford EEC uses a MAP sensor that has a modulating frequency IIRC.

Dont see why one would prefer this in the day and age of flash tuning for (much more sophisiticated) manufacturer ECUs.

This is not an area of performance which warrants cost cutting.

[THORNSPAWN]

It's a glorified version of the Jaycar Digital Fuel Adjuster only not as good.
The Jaycar one has 128 adjustable load points.
They work on TPS and AFMs too, any variable voltage signal, not frequency.