About this page

This page covers the installation of a GenBoard/VerThree into a Daihatsu Charade GTti wich is a 3cyl 12valve Turbo car.




Couple of days ago i upgraded from firmware 1.1.85 to 1.1.95 because 1.1.95 suppose to have better acceleration enrichment. Now i have a random trigger error. I read in the firmware release notes the SD-log caused trigger errors because of reinitilizing of the SD card. I have problems with disabeling the Sd-log because if disabled it enables again and disabeles my knock sensor channel 0, setting it to 240. Now i use my knock sensor to prevent knocking so i want it enabled as a safety guard to protect my engine from me . In 1.185 i used to modify the config ini file by hand and replace INVALID with disable enabled but it Doesnt work anymore. Any suggestions would appreciated

  • 30-08-11 problem fixed uploaded firmware 1.1.85 and works good again no ecu resetting when driving.


Yesterday i was happy because it seems like i solved the problem.

This morning the car drove beautiful to work but going back was horrible.

Black dry carbon on only the first cilinders plug again even after cleaning and strating 30seconds later cilinder drops out.


i couldnt get the VE table wright, checked the software all ignition wiring and plug wires evrything no luck.

Evrytime the plug from first cilinder was covered with carbon.

After some time i got the bright idea its maybe the a faulty injector from the first cilinder changed the first cilinder injector with the one from the second cilinder and fitted a new injector to the second cilinder boy what a change it runs like crazy except idle and part throttle with low load is difficult tuning, but ill get it right soon lol


Little update,

Project nears completion,

Some oil leaks fixed, and some ignition problems caused by a bended rotor axle and a imbalance caused by a ingle trigger tooth. Welded two counter weights and alligned the axle its working fine. Tacho problems where caused by oxidized solder mounts in the tacho cluster.

Filling the tables and setting the software to drive the electronic parts takes some time, learning the software and all engine parameters is really fun to do.


MOT today went straight through CO < 0.1% :)

Guy couldnt believe a 22year old car with this value hahahaha


Engine fired up :) running dodgy but tuning VE table give a big improvement in idling. Now the rest of the table :)


Yesss Tacho is working nicely directly driven by the p259 ( oldstyle tacho with coil and ignitor)


Injector problem solved.


Problem exists,

Last night reviewd the trigger setup.

To getter a better error free trigger is essential for rulling out trigger errors as a cause of the injector problems.


Problem still exists,

Injectors not firing at right speed and only one firing with camsync.

I tested with the camsync playtrigger in VT lastnight but it doesn't make any diffrance shifting the cam trigger event,stays fireing at one injector connector.


Last week i ordered the PWM kit from the shop for the fet-drivers. I replaced today:

But still same problem, turning ON all FET's manual is no problem, but no response in normal operation.

The more i check things the more i think its firmware related.

Because if i disconnect the flyback the problem persist.

in Vemstune:

If i change the injector firing order only the last one from bottom up is blinking. So if no.1 is on top it blinks, if i change it to no. 3 it blinks rest stays off.

I can turn each injector on and off manually in injector visual setting.

Below the link to my files folder with log and config.

Firmware 1.1.85 upgraded to 1.1.88 same problem.

VT version 2011.02.10

A little step forward, if i turn off sec trigger all three LED's start blinking in selected firing order :-)

Lets hope its oke when the unit is bolted in the car and the Hall sensors do the triggering...



Flyback is installed with zener (what type ? what voltage ? transient suppression diode ?)

  • Zenor is TVS Zenor 30v (5KE30A N6282A)
Fet Offfirst diodesecond diodeZenor
pin 7-1831mv-3mv-7mv
pin 19-15mv-3mv-7mv
pin 8-11mv-3mv-7mv
Fet ONfirst diodesecond diodeZenor
pin 7-7,76v-3mv-9mv
pin 19-6,2v-2mv-9mv
pin 8-5,64v-3mv-9mv
** at zener side (??? where exactly) 11,8
  • and between diode (anode or cathode?) and Fet 10.05v (measured exactly in what direction) ? With FET's activated or not ? Or if injecting, than what RPM, pulsewidth, duty ?

Can de diodes be faulty?

We are sending out FET-based active flyback boards soon (best setup for low-Z injectors, best efficiency with PWM-ing still fast injector switchoff)

  • bare boards around 2011-03-23
  • assembled around 2011-03-30


After i soldered r154 to get 12v to the Fet drivers i Noticed my 5v jumped up,

I didnt take notice because sensors can handle except the wide isnt working i got 5.72v at Pump- wich supposed to be 4v. I checked the wiring and read the wiki but cant find a solution

Problem solved bad copper corrosion on ground connectors renewed the connectors and problem solved volt readings are ok.

You the connectors of the econoseal connection? I dont have them i use my standard modified box with wiring. I didnt treat the copper for corrosion and it corroded batly in just a couple of months. I didnt expected it to go that fast.


Strange problem, VT shows 0 volts, tps not working and temp sensors display 154 degree and ghost signals on the cam sensor while its disconnected.

Possible cause, i soldered 2 diode d27 and d42 bottem of the board for signal conditioning but i removed because of ghost signals. I also soldered and removed the resistor and capacitor between pin 28 and 29 the 5 volt supply but i am only using 28 so for error searching i removed thema again.

Fet drivers still see 11.94v and board is running and loaded with firmware 1.1.84 maybe a broken trace or solder blob shorting something.

Well will take the unit out of again and check it.

29-01 Question: Can a hall sensor ss443a be killed when its shorted to ground?

I glued the sensor inside the dizzy for cam referance using glue as insulator.

I checked wiring is ok, and have 4.87v at supply line. Before fitting the sensor it worked but after fitting and testing its dead .

Well had a spare tl4905l on the bench, glued, soldered and tested it.

Its working although hall sensors is still a mistery for me. Voltage at signal gate is 7,2v while 5v is applied. The ss443 gave 12v while 5v applied. I isolated all wires carefully so hope it works well now.

Config files, log files and triggerlog is found in the file area:






Ignition system

The initial start will use the original single coil and distributor.

Potential upgrade to coil on plug. Plug length from top of cover in CB80 GTti is 117mm . Bid on 6-BMW COP units on eBay 21-09-2004

Possible COP fitment (Beru) :

beru nrberu ref nr connectionlength in mmohms
ZLE 232(BMW) 0.300.122.102M41172000
ZLE 233(Audi/VW) 0.300.122.103M41225000
ZLE 234(Mercedes) 0.300.122.111M41132000

Fuel system

A fuelpump pumps fuel from the tank through a filter to the fuel rail where your injectors are fitted and then through a fuel pressure regulator through the fuel return line back to the tank.

The fuel pressure regulator regulates the pressure in the fuelrail so the injectors can inject fuel with enough pressure.

Normally the pressure is between 2,5 and 3bar.

A fuelinjector is a pretty simple but delicate and precise part.

Its a housing with a relative big electrical charged magnet, a needle a common spring and holes to get fuel to the needle.

The spring + the fuel pressure keeps the needle closed, the magnet moves the needle and opens the hole to inject fuel.

This opening happens in micro seconds and the whole secuance of opening, hold open and closing just takes milliseconds (1/1000 sec). Opening your injector by connecting your injector direct to a battery wil destroy your injector.

The coil inside gets to hot and burns your injector.

Opening of the injector is called Ramp-up and closing Ramp-down,

there is also the battery factor involved. When the battery voltage is lower, it takes longer for the injectors to open. This is compensated in the Battery_Factor value in Base Settings -> injector settings.

Injection takes time, Ramp-up+opentime+ramp-down compensated for battery voltage.

Fuel injectors : 3 pcs.DENSO 23250-87701-000 295cc/min

Injector fuel pressure rating : 2,5bar (Manual)

Fuel pump 80 litres/hour : 1330 cc/min

Injector solenoid electrical resistance : 13.8 ohms

Fuel injectors : 3 pcs.DENSO 195500-1350 460cc/min

Injector solenoid electrical resistance : 12.6 ohms

note:: I have a other set 195500-1350 wich measure 2,6 ohm

the diffreance is in the color of the top but measure to know.

You can ad a 10ohm resistance to run them in high ohm settings or change some parts on your board.


i fitted the diodes and a wire from the trace to EC36-23 but i never thought about it to pull a wire from EC36-23 to the Injector V+.

I read evry where you fried your board if its not connected but my board still seems to work well.

Update: 15-01-2011

I think i figured out the injector problems.

Version 3.2 already had the Fet drivers installed.

I got confused building the unit with the LowZ and highZ setup,

for highZ you should short SJ1 and solder D6 wich are not onboard of the 3.2 unit but on all previous versions.

In prior versions you should also short pin 2->7 and 4 ->5 at the Fet drivers solder place. But mine where already there. So what i did i configured a LowZ setup with the diodes in highZ setup. Some how this protected my unit from destruction but also prevented the injectors firing like they should. I connected a 0,5w light bulp and switching them on takes a couple of seconds and off to. tomorrow i desolder the 20v HighZ deodes and replace them with LowZ m124 B14 diodes in the correct way and check voltage at pin 3 + 6 from the Fet drivers for 12volts.

Update 27-1-2011

Yeah car started and run for a minute when the cam trigger tooth knocked of the hall sensor from its bracket

Before i removed the loom and board from the car for repairing the WBO2 pump - wire i checked voltage on the FET driver. Voltage was 0 at the supply pin. Reading the Wiki for information i found for driving the Fet's it needs to be higher then 6v and 12v is normal.

R154 on the back of the board on version 3.2 is the supply source of the drivers, and was missing.

I also soldered D14 and D27 wich i removed again because they give ghost triggers,

and R142 and C62 between pin 26 and 29 TPS supply and 5v wich i removed again because didnt see a point of pulling up voltage on the TPS wich works well on 5volts.

Finnely building the board and loom back into the car and tested the WBO2 wich still gave faulty readings.

Checking the pcb wiring from Pin 7 southbound the circuit to C50-C54 was damaged and giving the error.