Monitor Mode: Allows monitoring of up to 4 channels at one time. Also allows tracing of AVC-R monitor functions.
Setting Mode: Allows user to adjust air/fuel ratio through Wide and Narrow Throttle maps. Other features like throttle percentage settings, rpm point settings, Vtec engagement/disengagement are adjustable through the setting menu.

Etc. Mode: The etcetera menu is for adjusting the variables that are required for the V-AFC to properly adjust fuel(i.e. # of cylinders, throttle position sensor type, sensor type, etc.)
Monitor Mode: 1, 2, 3, 4 Channel
Intake Pressure
Throttle Position
Engine RPM
Air Correction Rate
ECU VTEC Solenoid output
V-AFC VTEC Solenoid output

Up to four of these parameters can be monitored in three different ways:
If monitored numerically, by pressing the up key the user can see a peak hold value for the chosen parameter.

If monitored in analog meter mode, up to two meters can be displayed at one time. By pressing the up key, the analog meters will hold the peak value. If under 3 or 4 channel mode, only the first two channels will be displayed.


If monitored in graphic display mode, by pressing the up key the AVC-R can start "sampling" or memorizing data channels. The memorized graph can then be replayed by pressing the right key. Anytime during replay by pressing the right key again, the display can be paused. To review any part of the memorized graph, the user can push the left key during replaying. Anytime during backwards replay, the left key can be pressed to pause the display.
If monitoring one channel, then the last 60 seconds can be replayed.
If monitoring two channels, then the last 30 seconds can be replayed.
If monitoring three channels, then the last 20 seconds can be replayed.
If monitoring four channels, then the last 15 seconds can be replayed.


Monitor Mode - 2D Trace Mode
The 2D Trace Mode displays one user-selected parameter versus engine RPM. The horizontal scale being engine RPM and the vertical scale being the user-selected parameter. There are three ways to view the 2D Trace. One way is a simple cursor that floats around the screen showing what the user-selected value is. The second way to view the graph is with a 10 point floating trail to show the trend of the user-selected value. The third way is to view with a "Ghost Map" trace. The "Ghost Map" shows wherever the cursor has been and does not clear until the user clears the screen.

Setting Mode: Wide Thr / Narr. Thrtl
Both the Wide and Narrow Throttle setting maps are used for adding or subtracting fuel throughout the fuel curve. This unit takes the input pressure signal and converts this signal into absolute pressure. The modified output signal value is then converted back into a pressure signal and sent to the ECU. The Wide and Narrow Throttle setting maps can be adjusted at 16 different RPM points with 8 each on the Hi cam and Lo cam. Within each selection, Wide and Narrow, are two maps. One map is for the Lo cam and the other map for the Hi cam. This means that there are a total of 4 maps between the Wide and Narrow selections (Narrow-Lo, Narrow-Hi, Wide-Lo, Wide-Hi).

The range of fuel adjustment is +/- 50% which can be done in 1% increments. However, varying upon application, when using a stock ECU there is a limit before the check engine light will turn on. When it does turn on, this means that the ECU thinks that there is boost entering the engine and the ECU will go into a limp mode. Generally, this is in the 12-15% additional fuel range. Keep in mind that the V-AFC modifies the factory pressure sensor's signal so when a user tries to add too much fuel, the pressure sensor voltage will go too high and the ECU will think there is boost entering the engine this is why I beleive the premature rev-limiting occurs that I have mentioned before..

When looking at the map, the vertical dotted line represents the VTEC engagement point. Fuel settings to the left side of the dotted line for Hi cam, and right side of the dotted line for the Lo cam, will have no effect on fuel correction. During tuning, the Wide Throttle map should be set first and then the Narrow Throttle map. All values between the predetermined RPM points will be interpolated. Only a professional tuner using engine monitoring equipment like autotap and a dyno should be tuning!

Setting Mode: V/T Cont
This is the screen used to adjust the VTEC engagement point. A tuner can adjust the RPM point at which the engine switches from the Lo to Hi cam during acceleration as well as when the engine switches from the Hi to Lo cam during deceleration. However, the Hi to Lo (deceleration) rpm setting cannot be set higher than the Lo to Hi (acceleration) setting and the Lo to Hi (acceleration) rpm setting cannot be set lower than the hi to Lo (deceleration) setting. The CL should use an engagement point of 4800RPM and disengagement mode of 4600RPM.

Setting Mode: V/T Unmt
This function performs correction for when the ECU and the V-AFC Vtec engagement points differ. For example, if the V-AFC's Vtec engagement point is set to 4800rpm and the ECU's enagement point is set to 5000rpm, then the VTEC Unmatch Fuel Correction setting will occur during this 200 rpm difference (between 4800 and 5000). Technically the fuel correction can be tuned with just the wide and narrow maps, but the use of this feature allows easier and finer tuneability. Whatever values entered into this setting will be added to the corrections in the wide and narrow maps.

Setting Mode: Throttle %
On this screen there are two values, Lo and Hi. Each value determines whether the Narr.-Thr or Wide-Thr map will be used by the V-AFC for correction. If the Lo value is at 10% and the Hi value is at 50%, then the settings on the Narr.-Thr map will occur between 0 and 10% throttle position and the settings on the Wide-Thr map will occur between 50 and 100%. If the throttle is between 10 and 50%, then the V-AFC will interpolate between the two values set on the Narr.-Thr and Wide-Thr maps.
The Wide-Thr value should be set at the point where air/fuel ratio no longer changes with an increase in throttle angle. For example, if at 65% throttle the air/fuel ratio is at 10.5:1 and at 100% the air/fuel ratio is 10.5:1, but at 55% throttle angle the air/fuel ratio is 10.9:1 then the setting for Wide-Thr should be 65% (the point where air/fuel ratios no longer vary according to throttle angle).

Setting Mode: Ne-P:Hvt
This menu allows adjustment of engine RPM points to control fuel while the engine is on the Hi cam. [b]Beginner's should define eight points between 1000 and 7100(red line/rev-limiter).[b] These eight points will appear on the Hi cam maps in both Narrow and Wide setting screens.

Etc. Mode: Sensor Type
This menu allows the user to select which type of sensor the V-AFC will be correcting. CL will be set to 06 IN and 06 OUT

Etc. Mode: Car Select
This screen allows the user to set the number of cylinders the engine has and what type of throttle position sensor the engine uses. The CL uses an ascending type (arrow pointing to the upper right hand corner) throttle position sensor.

Etc. Mode: Grph Scale
This mode allows the setting of the maximum and minimum values to be displayed under the Monitor Mode's graph display mode, analog meter mode, and 2D Trace mode. You can select the following scales:

Pr: Intake Pressure

-760mmHg~0mmHg (default for CL)
-760mmHg~+1.0kg/cm2
-760mmHg~+2.0kg/cm2

Ne: Engine RPM
0rpm~6000rpm
0rpm~7000rpm(default for CL)
0rpm~8000rpm
0rpm~9000rpm
0rpm~10000rpm

Cr: Air Flow % Correction
+/- 3%
+/- 6%
+/- 9%
+/- 15%
+/- 30%

Etc. Mode (sensor check)
This mode will check the voltage of the pressure sensor, throttle sensor, and scramble switch on/off. This is to check if all connections have been properly connected after installation. Also if there is improper operation, this screen can be viewed to determine if any connections or sensors are bad.

Etc. Mode (VFD bright)
This mode allows brightness adjustment of the VFD (Vacuum Florescent Display).

Etc. Mode (Initialize)
This will restore all data to factory default settings. All previously saved data will be lost. To initialize data, select YES and push the [NEXT] key. Then turn the ignition switch OFF and then ON again. All data will be initialized. NEVER DRIVE OR START THE CAR AFTER A HARD RESET UNTIL YOU RE-ENTER THE CORRECT PARAMETERS!!!!

More specifics to follow soon

 

Setting Mode: V/T Cont

 

Setting Mode: V/T Unmt

 

Setting Mode: Throttle %

 

Setting Mode: Ne-P:Hvt

 

Etc. Mode: Sensor Type

 

Etc. Mode: Sensor Type

 

Etc. Mode: Car Select

 

For everyone who lost the manual use Accord v6 diagaram

 

More manual pages

 

Last one

 

Recommended Baseline For Beginners - YOU SHOULD HAVE IT PROFESSIONALY TUNED Afterwards... This is to get you around town until you can!!!

VTEC High->Low: 4600
VTEC Low->High: 4800

Wide open Throttle:

LVT
1000: -1
2000: -1
3000: 0
4000: 0
HVT
5000: 0
6000: 0
7000: 0

Partial throttle:

LVT
1000: -1
2000: 0
3000: 0
4000: 0
HVT
5000: 0
6000: 0
7000: 0

 

Ude, you rock, thanks. I'll let you know how everything goes when i hook it up next week.

 

Be sure when you tap to the ECU wiring harness you use good terminal connectors preferably inline splice taps so you can remove and re-install w/o having to got through a nightmare... depending on where you install the unit youll most likely need to make an extension cable... be sure to use good quality stranded copper wire. And then make a map of which colors go to where on the Vtec controller for future reference.

 

Dont just twist(rat-tail) the ends together.. Use secure connectors that are crimped securely.

 

I recall that there was someone on the AV6 board making a plug and play kit for the VAFC so that you wouldn't need to splice any wires...is that still happening?

 

dunno ??

 

Good stuff!! I copied this post and put it in the Extremely Useful Topics Archive!!

 

I had this email from a while back.

 

Thanks ModMole.

Now for all of you that actually have the V-AFC. Sometimes when I race my car will automatically hit the rev limiter at 5k rpm. I know for a fact it's the V-AFC. Do you guys ever get that? I know johntypes gets that sometimes as well.

spiro

 

Coo! I think that's what it was!