Apexi neo setup

Many of you may have an older unit or even the old blue Super AFC without the rotary dial. Rest assured however that most of the setup remains the very same for your vehicle, regardless of which version of the SAFC 2 you own. This article assumes you have already wired in and installed your SAFC. To operate this product, you must set several items during initial setup which we will outline here.

If you are not certain what kind of airflow sensor type is in your vehicle, check the Super AFC wiring instructions table for the values. For vehicles equipped with a hot wire sensor, set the sensor output calculation method. Setting the number of cylinders under the car select menu option.

Select Sensor Type and set the number of cylinders to move onto the next setup item. The Super AFC can support vehicles from 1 to 16 cylinders although this setup option can vary depending on the ignition setup. Commonly asked questions:. A: Because of the trailing and leading ignition setup on your FC or FD, you will want to set the cylinder count to 2.

A: Set the ignition or cylinder value to 2 instead of 4. Because your ignition system shares coils or has multiple cylinders run on one coil, you will need to change the cylinder number to get your RPM readings right. Q: I have a Dodge SRT-4 or similar vehicle that features a TPS outside of the accepted volts of range, or does not recognize throttle position sensor. To do this however, you will need a tuning computer, piggyback or standalone as well as understanding the 3 operating modes of the ECU itself.

A piggyback like the AFC is an easy, cheap alternative that allows you to get the job done with minimal hassle and cost. What does this change? When you lower or raise the mass of air seen by the ECU, you can lower and raise the IPW and subsequently the injector cycle. While there are those members of the tuning community that likes to turn their nose up at such a crude and simplistic method of tuning.

But they do have a point… how you ask? When one of these parameters is violated or breached, the ECU switches the car into limp mode, making the car overly rich and circumventing what could be certain disaster. Closed Loop mode is where you as a tuner should spend the majority of your time. This mode helps the ECU determine if the previous combustion cycle was rich or lean, and what to do about it. The ECU is aiming for stoichometric air fuel ratio, which would be Reaching this mixture will allow you to extract every last single bit of mileage from your vehicle.

Whether or not your car is running lean or rich is an easy determination, once you have these fuel trim values. When tuning with a piggyback for maximum gas mileage, you want these 2 values as close to 0 as possible to prevent any modification to the Injector Pulse Width. When tuning for maximum power however, ignition timing is the name of the game. If all other values such as IAT, boost and engine load are the same, your tuning changes to your AFC will dictate the ignition timing of your engine.

Earlier, we spoke about possible downfalls of using a piggyback like the SAFC. So when tuning your vehicle on a dyno at wide open throttle under load, you can see how this can become a problem. If you are not comfortable doing this modification or any modification on this site, please stop here and take your vehicle to an experienced mechanic who can both install and tune your vehicle. Undo the negative terminal on your battery, if you own a stock radio now is a good time to secure your radio code unless you do not have it.

Now undo the 10mm bolt that holds your ECU cover and connector in place. If you are not familiar with the AFC NEO, the ground and the power wires have 2 seperate leads that must be connected roughly an inch apart on their respective pins. Do not mix or flip the sequence in which these wires are soldered or teed into your wiring harness, as that may result in damage to your fuel computer. Locate your S13 ECU ground wire which is pin 17, you will be teeing the secondary ground wire brown AFC wire, or black with white stripe by splicing a spot closer to the ECU side of the harness.

After teeing the secondary ground wire, locate your primary black wire and tee that into the ECU ground wire roughly an inch downstream of the harness. The primary power wire red wire will need to be teed into that very same ECU power wire, just an inch to an inch and a half downstream of the harness. Next up is your throttle position sensor, which is the gray wire on your AFC harness. Tee the gray wire into pin 20 which will enable your AFC NEO to see what position your throttle is, and which map to utilize or interpolate between.