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Street Class Unlimited Class
DOHC SOHC Ion Updated 1/05 For the most recent list of the fastest five cars click here. |
Installing a Apex'i SAFC I/II on any Saturn S Series - Part 2
Setup Step two is setup. I'm going to cover setup of both the SAFC I and II in one procedure because honestly there is so much in common with them there's no reason not to. For the most part you will use up and down arrows to change values, left to go back, and right to go forward or select. If you ever are unsure check your manual. First hook your negative battery cable back up. Second turn your ignition to the on position but DO NOT start your car. The SAFC should display a nice blue splash screen then list three options: Monitor, Settings, and Etc. Scroll down to Etc and select it. ETC Menu This menu is where we will be setting up the sensor types and configuration information. Start with the first selection, Sensor Type. The Saturn's use a pressure sensor so select this option in the list then press next or right. The next setting will determine how the SAFC reads this pressure sensor. For most cars this will be set to 04 IN / 04 Out. After setting the pressure sensor press the back button or left a couple times to get back to the etc menu. Select "Car Select" and next. For the Cylinder (Cyl) setting use "4" for 91 - 95, "12" for 96 - 99, and "2" for 00 - 02. For all models make sure the arrow points up and to the right. Now we need to set how the graph will be displayed. In other words how the graph will look compared to the values received. Press back or left once and look for "Grph Scale" for the SAFC-I or "Disp Scale" for the SAFC-II. Select it and press next or right. For Pr (pressure scale) leave it at the default value of 760mmHg. Ne is the maximum RPM. For our cars this should be set to 7000. If you Saturn can rev past this then set it to a few hundred past your cars redline. Next thing to change here is the Cr for correction ratio, which should be set to 30%. Last thing to change is the VFD brightness. Press back or left until you back to the etc menu and select "VFD Bright". Set the day, dim, and night settings as you see fit. Personally mine are 99, 60, and 15. This is one of the few settings you may need to play with depending on where it's mounted and how easy it is to read for you. When done press back or left until you're back to the main menu Settings Menu The settings menu, strangely enough, contains most of the settings. The first thing to change is the throttle point. This is what tells the SAFC the difference between lo and hi throttle. Select "TH Point" and press next or right. The two settings are low and high. Low should be set between 20% and 30%. High should be set between 60% and 80%. Start with 25% and 75% and see how those settings work for you first before playing. Press back or left to get back to the settings menu when done Next we can set which points in our RPM range to make corrections. Here is where one of the main differences comes into play between the SAFC I and II. The SAFC-I has a total of 8 points; the SAFC-II has 12 that you can adjust. Select "NE Points" and you will see a list of RPM points. Since I'm using mine with performance cams, which cause a rich condition and rough idle at lower revs I wanted a closer range on the low side so I could lean it out a little more precisely. Plus my Saturn should never see revolutions over 6500 so I don't need to leave the default of 7000+ in there on the high end. I would suggest starting at 800 on the low side and 6600 on the high for both units, and evening out from there. Just select each point with the right or next then go up and down to raise and lower. The points on my SAFC-II looks like this, giving me a little finer tuning on the low end: Ne01: 800 The next setting to verify is the Dec.-Air setting. This is used on a hot wire type airflow sensor, which we do not use. Select with next or right and make sure that "Thr" is set to ****, which means not used. Press back or left to get to the settings menu. There's one last setting for those with the SAFC-II, the knock
sensor. First off press left or back to the main menu and select
"Monitor". On the next screen select 1 channel, press
down until "Rev" is selected, and then next. It should
display a nice engine revolution display. Start the car and let
it idle. The display should match your tachometer exactly. Rev it
slightly to make sure. If it doesn't you need to change your cylinder
setting, see the troubleshooting section at the end. Do not try
to setup the knock sensor until the revolutions match or the knock
sensor will not be setup correctly. Once you have verified it is
correct press back to the main menu, and select settings. Select
"Knk Set" and press right or next. The car needs to be
running, which it should be because you just verified the revolutions,
right? Good. Move the cursor to the "1: 0" line. Next
to it you will see it says "1500". Press the gas and try
to hold the tachometer to a value between 1300 and 1700 RPMs. You
should see your revs as the top number. Once you have it steady
press right or next once. It will put a number in place of the 0
so it will read something like "1: 26". Now move down
to the "2: 0" line and do the same with the tach between
3200 and 3700. It will enter a number in again like "2: 38".
You've now calibrated the SAFC-II with your knock sensor. Press
the left or back button once. 
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