HOW TO INSTALL VTEC ADD-ON TO 1980 HONDA ECU
 
THESE INSTALL INSTRUCTIONS WERE MEANT ONLY FOR BUYERS FOR KITS BOUGHT FROM THE FOLLOWING TWO EBAY MEMBERS.
flwrchylde
or
dream-beamz
 
Kits bought from other sellers linked you to my site illegally and most likely will not work for your kit anyways because components do differ from seller to seller.
 
Remember as advertised in the auction if you are not experienced with electronic components as well as soldering and desoldering then this kit is most likely be too hard for you to install,  please seek the assistance of someone experienced enough to install this kit.
 
First make sure you have everything as seen in the picture
Q34: 1780 PNP switching transistor
Q17: 1030 PNP switching transistor
Q26: C2785 PNP switching transistor
Q37: C2785 PNP switching transistor
D11: Clamping diode
IC14: High Side Switch
C94: 4.7uF tantalum electrolytic capacitor
C60: 1uf tantalum capacitor
R142: 10k resistor
R143: 51k resistor
R144: 10k resistor
R107: 220 ohm resistor
R115: 220 ohm resistor
R116: 220 ohm resistor
J10: 0hm resistor
J5: 0hm resistor
J3: 0hm resistor
J1: 0hm resistor
Around half an inch of Heat shrink tubing
 
Step 1: Make sure you have the correct ECU sub model. You can check this by looking in the circled area of the ecu.
 

Step 2: Find and desolder the holes for the components Q34, Q17, Q26, Q37, D11, IC14, C94, C60, R142, R143, R144, R107, R115, R116, J10, J5, J3, and J1. If any of them already have something in them then leave it. Example, this ECU already had Q37, C94, J5, and J3 in place so I am leaving it installed.

Step 3: Find, desolder and remove the components R90, C71 and J4.

Step 4: Install the high side switch at IC14. Do not forget to cross pins 3 and 5. Heat shrink is provided to to protect these pins from crossing. If the picture below does not help then please see this link. IC14 preparation

Step 5: Install the components at Q34, Q17, Q26, Q37, D11, IC14, C94, C60, R142, R143, R144, R107, R115, R116, J10, J5, J3, and J1. The polarity of Q34, Q17, Q26, Q37, D11, IC14, C94 and C60 do matter. Please see the part list at the beginning of these instructions and the markings on the ECU board to figure out the polarity.

 

Troubleshooting:

If you get a code 20 then your ELD is bad or your car does not have one. This code will not cause the ECU to run in limp mode or put a yellow CEL on your dash unless you are trying to pull a code

If you get a code 21 then check your pins on the high side switch to make sure no pins are touching each other. Ensure the heat shrink is giving you the coverage you need. Also check to make sure the polarity is correct for Q101, D11 and C60

If your VTEC is not engaging but you get no CEL make sure your programmed chip has vtec enabled. If your using the same chip you had before you put this kit in then most likely VTEC will not work for you until you get another chip.

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