Fan control evo 7

[Wout]

Hi ,

I need to get this car ready but have one problem with the fan .
i will start when i put ignition on and cant get this of.

what would be the good wiring for the fan module on this evo ?

I use the sm4


Wouter

[Ian]

The main fan on Evo 7, 8, 9 has its own controller which is commanded by the ECU. But the logic for the controller is inverted so you must invert the output in the O/P setup menu when you select the output. Outputs are inverted by pressing the i key when you have the desired output highlighted in the pop-up box after entering on the output function.

[Wroom]

Try inverting the signal.

You can set up a PWM output to control the cooling fan rpm on EVO7 and up using a GPC table.
Then use fan1 and fan2 outputs for the two stages of the condenser fan.

[Wout]

Thanks found it .

Now i finaly can map this car ,

its a 2.3 HKS stoker so i will see what this can do .

[Wout]

strange issue ,

for i want to tune the car i put the timing correct , and must put a sync/cil ip lead to 30 to get the timing oke .

I also dont know futher what they have done with this car , because its a france import car and it was running on a walbro minj 600 ecu .

If i have the timing good for cilinder 1-4 ( wasted spark )
Would then also the timing for cil 2-3 be good ?

We only know that it is a 2.3 HKS stroker engine with high cams and verry large injector . Also the injector resistor pack is revomoved and they have install denso 2.2 ohm resistor coil . This one i have found in the software .

I dont work that many with evo's and then this project is also difficult because i did not build this car .
Have any body here done this before on a sm4 ?
because starting this car up is really difficult .

Wouter

[Ian]

The Cyl I/P Lead angle should be 75 deg for Evos. Check that M1 - Ignition setup - Ign trigger edge is set to [-ve edge dwell]. Are the coils original or has the car been fitted with a different ignition system?

As you say that you have not seen the car built it would be good to confirm that the crank sensor disc is in the correct place (It shouldn't be possible to get wrong but I have seen it done). With a voltmeter on the crank sensor signal wire check that the signal goes from 5v to 0v at 5deg BTDC.

[Wroom]

strange issue ,

for i want to tune the car i put the timing correct , and must put a sync/cil ip lead to 30 to get the timing oke .

I also dont know futher what they have done with this car , because its a france import car and it was running on a walbro minj 600 ecu .
Then you should carefully investigate if the have changed the timing disc at the crank, and that the timing rotor at the exhaust cam is not modified to put out only one pulse per cam rotation. Also check that the rotor is not installed 180 degrees out of phase. This is a very common mistake to do, since the workshop manual for the car is a bit unclear on this. If the rotor is mounted incerrectly the engine will be a bitch to map out with the injectors hitting the overlap at middle to high load.

If i have the timing good for cilinder 1-4 ( wasted spark )
Would then also the timing for cil 2-3 be good ?
Yes, it should. See note above concerning the timing disc and camsynch rotor.

We only know that it is a 2.3 HKS stroker engine with high cams and verry large injector .

Also the injector resistor pack is revomoved and they have install denso 2.2 ohm resistor coil . This one i have found in the software .
This is a very good modification, since the resistor packs limits the opening current for the injector, and also makes the fuelling sensitive to supply voltage variations.

The resistor pack is there only because the manufactorer of the car wanted to save some cents on the injector drive circuitry.
The Autronic has a very good injector drive circuitry that do not need a resistor pack, and in fact does a better job without it.

I dont work that many with evo's and then this project is also difficult because i did not build this car .
Have any body here done this before on a sm4 ?
because starting this car up is really difficult .

Wouter
I have. Put the car on a flatbed truck and come to Sweden and i will help you with this. ;)

[Wout]

Then you should carefully investigate if the have changed the timing disc at the crank, and that the timing rotor at the exhaust cam is not modified to put out only one pulse per cam rotation. Also check that the rotor is not installed 180 degrees out of phase. This is a very common mistake to do, since the workshop manual for the car is a bit unclear on this. If the rotor is mounted incerrectly the engine will be a bitch to map out with the injectors hitting the overlap at middle to high load.

I think they instal the rotor 180 degrees out of phase .

my i/p lead is now on 15 degrees , and the engine is running smooth an verry nice . the timing is good at all rpm's .

tomorrow i will map this car and will find out if it will be a bitch to map .

i must say , it was a bitch to drive with the old ecu and mapping .

Wouter

[Ian]

Wouter, there is still something wrong, the Cylinder I/P lead is never 15deg. Like Wroom said you should correct the reason for that before you map the calibration.

[Wout]

Just to compleet this topic ,

I found the problem a week ago and it was inverting the cil-sync rissing and falling .
I setup this wrong .


Just to say i found some problem with the stepper and solved this verry easy .
every time i put ignition off so rmp goes back to zero the stepper did not remember his stepper point and was jumping arround and engine stalls when you restart it.
When you dont give power to the valve when rpm is zero it really nice to work with it .
Cold and hot starts are really as good like standaard evo or even better .

Also the IAC minimum opening is verry little , for cold start i have a 20% for 1350 rpm and for 1000 rpm it need 12%
this is with throttle closed !
The stepper steps are 50 for cold idle and 33 for hot idle .

maybe for those that have problems with the stepper this could help .

Wouter

[Ian]

Wouter, is this what you have in the Stepper setup table;

If the count number is wrong the stepper can be forced shut on restart causing stalling