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I've seen a rash of people wanting the guide for the HKS EVC VI lately so...

HKS EVC 6 (45003-AK005)

Supplemental set up instructions

Pre Setup HINTS for installation

Please follow the following instructions after successfully installing your EVC 6. The directions in the HKS installation manual should be followed for installation. For Evolutions, the diagram on page 17 should be followed.

For “reduced taper boost control” the wiring schematic on page 22 should be followed for hooking up the optional RPM and TPS input to the EVC. Note Only the RPM wire needs to be hooked up to reduce the boost taper. The ECU wiring schematic book that HKS includes with the EVC 6 (Japanese language) should be used.

Please use M-24 in the Mitsubishi section. The letter “I” is the wire that is the RPM hook up and the letter “T” is the Throttle position wire.

RPM tap should be made to wire “I” using the “white” wire on the HKS harness.

TPS tap should be made to wire “T” using the blue wire on the HKS harness. If you wish to hook the TPS input into the EVC.


SET UP OF THE EVC

When you first power up the EVC 6, you need to follow the initial setup instructions found on page 28. This initial setup allows you to set

1. PSI or KPA reading
2. Wastegate style: internal (S) or External (P).

Step 3 is an important one to get right, but very easy to do. You have to run the car in a 3rd gear pull from 3k rpm up to 7k rpm. Monitor the boost on the display and try to find the PSI amount that the car runs on average. It will vary slightly (usually a 1.5 psi swing from max to min). Try to find the boost pressure that it runs on average MOST of the time while running through the RPMs. The EVC will show the peak and hold boost pressure on the top right of the display. You can turn the knob to increase of decrease the amount until it reads what you have determined as the stable (average PSI boost pressure). Once you have the amount dialed in, push the round button in (to enter the setting)

Step 4: Setting the target boost.
This should be the amount of boost that you are trying to run. Typical setup on an Evo varies (from 19 psi to 22 psi). Push the round button once you have entered you desired boost pressure.

Step 5: Setting the correction coefficient
You must drive the car in 3rd gear during this step to verify that the desired boost pressure is achieved (that you set in step 4). The boost should go to the desired boost pressure and hold the pressure up to about 6000 RPM before it starts to taper. If the desired boost pressure is achieved. Then you push the button and accept the default coefficient of 100 percent. If the boost is lower then increase the value on the screen by turning the knob up 2 to 3 % (i.e. 102). DO NOT push the button in until you make several runs and are happy that the boost goes to the desired boost pressure. This may take several times to get the value set (once again the default is 100%). Most of the time on Evos, this is usual set to 100 percent, but some cars need to have some adjustment (95 to 105 are sometimes found). But adjust this until you reach the desired pressure and then push the round button it.

This completes the initial setup of the unit. These adjustments are only made one time when powering the unit up. The only way to get to this screen again is to reset the unit. If you mess up, you have to reset the unit, to do the initial setup again. Reset directions are found on the bottom of page 42 in the HKS manual.



CUSTOM SETTINGS TO ELIMINATE TAPER

The following steps assume that the EVC 6 is working properly and installed properly but has a boost taper starting around 5800 RPM up to your redline.

Staring from the monitoring (normal screen). Push the lower button 2 times. You will see a “1” on the display. Push the round button and turn it until “3” is shown and press the round button.

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Part 2

NEXT turn the round button 2 clicks clockwise

(RPM axis grid point set mode) top of page 34. You can follow the HKS directions in the manual for changing the RPM points. I have illustrated the process below as well.

Note: You will need to adjust the 5th or highest RPM point first.

Push the round button the display will blink “1”, turn the round button until “5” is showing. Push the upper button to adjust the RPM set point. Set the upper RPM set point to 300 to 500 RPM below your rev limit (note RPM readings are shown divided by 100, so 7500 RPM is shown as 75). For this example, we will assume this will be set to 7500 RPM or 75 on the display.

Push the upper button again to cycle back to the “5”, it will be blinking. Turn the round button back one click counter clockwise, “4” will be showing. Push the upper button again to toggle back to the RPM set mode. Set the RPM to the “4” set point (2nd highest RPM set point. Repeat the above steps until all RPM axis points have been set, “3, 2, 1”.




Suggested values are:

“5” Value = (rev limit – 400 rpm) Typical value 7600 RPM (shown as 76)

“4” Value = Value of “5” – X rpm) Typical value 7100 RPM (shown as 71)

“3” Value = Value of “4” – X rpm) Typical value 6600 RPM (shown as 66)

“2” Value = Value of “3” – X rpm) Typical value 6100 RPM (shown as 61)

“1” Value = (RPM where boost begins to taper. Typical value = 5600 RPM


X = (Value at “5” – Value at “1”)/ 4

Example from above numbers

X = (7600 RPM – 5600 RPM) / 4 = 500 RPM (rounded up to nearest 100 RPM)

When all values are set correctly, push the round button to accept all entered values.


OFFSET MAP CORRECTION (Page 36 in HKS manual)

You can follow the instructions for setting these Offset values in the HKS manual or the procedure is illustrated below. Repeat the below steps until all RPM points (1 thru 5) are set.

From the point where you accepted the values above. Turn the round button until “OFS” is displayed in the upper right part of the screen. There are two “OFS” screens, one for channel “A” or LO boost, and Channel “B” or HI boost. I suggest working with the “OFS” for channel “A” at this time.

Once “OFS” for “Channel “A” is displayed. Push the round button to enter selection mode. You should see the first RPM value 1 or “56” displayed next to “REV” on the display. The big flashing value on the display should read “100”. Leave this set to “100”

Push the upper button, to toggle to RPM selection mode. Turn the button CW. Push the upper button again to toggle back to Offset set mode. The Offset value for this RPM point should be flashing in lower portion of the display. Turn this value to the Offset value as specified in the initial guess chart below. Repeat this procedure until all RPM Offsets are entered.

Initial guesses from my experience

1st RPM Offset value Always 100

2nd RPM Offset value 110

3rd RPM Offset value 135

4th RPM Offset value 170

5th RPM Offset value 190

Once all values have been entered. Push the round button to accept the values.

Push the lower button 3 times to return to the main boost setting/monitor display screen.


BOOST TESTING AND FINE TUNING

Testing should be done in 3rd gear WOT pulls from 3000 RPM to Redline. Have a friend watch the display or boost gauge thru the WOT pull. Note any RPM ranges where boost pressure varies from desired boost pressure, (Set boost pressure screen).

If boost still tapers in certain RPM ranges. Go to the Offset set map (page 36 HKS Manual). Adjust the OFFSET value (to a higher value by 10 points) in the RPM range where the boost is too low. Push the round button to accept new offset value, and then push the lower button 3 times to return to the main screen for monitoring. Repeat WOT pull, and make adjustments as necessary.

If boost is too high in certain RPM ranges, then adjust the OFFSET value (to a lower value) in the RPM range where the boost is too high. Push the round button to accept the numbers and then push the lower button 3 times to return to the main screen for monitoring. Repeat WOT pull and readjust using these two steps until the boost is consistent from 3000 RPM to redline.

If you reach an offset value of 199 on any of the values and still unable to eliminate the boost taper at that RPM range, then the turbo has reached its max flow capability at that RPM and cannot support anymore boost pressure at that RPM than it is currently making. In other words, the boost controller is all the way maxed out and it cannot control the boost pressure any higher at that RPM.