Failsafe with HKS EVC 6

[Richard L]

Until the system failsafe is set up, it will keep dropping the boost. We are no where near this stage. Need to sort out the green led and reading the IDC.

It appeared the green led failed. Lets move no, as it is not to important.

Let's set up the system:
(engine off, key on pre-crank position)

1. remove the two jets from the engine and let them spray into the air
2. SYS the system
3. Set the SC on the gauge until it to reads 6 bars
4. Set the WL to 10am
5. Set the WH to 2pm
6. Set the THRES to 10am on the controller.
7. Reinstate the jets
8. Remove DFS link back to PRK

Take the car for a test drive,

9. Hoe many bars are showing at WOT?
10. Does the failsafe trip and drop boost?

That is it for now. Await your results

[P997.tt]

Took her for a spin after removing the fs wires ... This is how it behaves ..
http://youtu.be/QBfpSmijsSU

Will make your changes and report back

[Richard L]

Looks pretty normal to me.

[Richard L]

Can you check the soldering of the two components, it is to do with the green led.

[P997.tt]

I set the gauge dials as per my tuners's specs, all is ok now ... Just 1 Q, if I rewire the failsafe and choose to unlink the dhb it will not put the system under failsafe If I turn the gauge off, am I correct?

Dont really care about the green led, as long as the system runs fault free, that light will live its life buried behind a speaker ...

Would like to thank you for the great support you gave me ....


http://youtu.be/ePm6ILIEqLU

[Richard L]

Yes, removing the DHB will allow you to retain full boost when you switch the system off. But I though you have already removed the failsafe wiring.

The settings I mentioned is just a starting point. If you rely on the meth tune, you need narrow the window by trimming the WL and WH. It is all in the user manual.

Have fun.

[naviuk]

Originally Posted by Richard L

The aquamist failsafe relay contact is "closed" when flow is normal. So the MAC valve is "energised" during a normal cruise and on boost conditions. Ie, port 1 &2 is connected. Diverting the boost into the HKS capsule, allowing it to control boost.

As soon as flow problem is detected, the relay contact goes "open circuit" and de-energises the MAC valve. Now the port 2 & 3 is connected. Directing the boost into the upper part of wastegate actuator resulting in dropping boost.

I will looking into this closely tomorrow. It is getting quite late here.

Hey Richard, I'm reviving this from the Dead

I'm now in the final stages of my setup (Finally) and i want to add the failsafe into the setup, I rely on the water injection to work in order to achieve the timing i have set, so in the event it stops working i need to make sure boost drops quick.

Reading through the diagram, i'm alittle confused, With the EVC6 and an external wastegate

O = Direct to Top port on EWG
I = Direct to Bottom port on EWG with "T" to Turbo/boost pipe

With the instructions earlier on, you saying when there is an issue the MAC valve will turn off and air will pass from the Turbo to "O" which goes to the TOP port on the EWG, but if pressure is applied from the TOP this will shut the gate cause boost to be uncontrollable. in the event of a failure, Ideally Zero air must flow to the top port and all must go to the bottom port force the gate to open at spring pressure.

Possibly i miss-read the diagram or instructions?

Would it be possible to do a diagram from this illustration (Attached) ?

I'm assuming you still keep a similar plumbing configuration but add the Mac valve in to bypass pressure in the event of an issue on the Aquamist unit.

Thanks!

[Richard L]

Try this one....ignore the other connection, concentrate on the red, brown and white wires to the MAC valve.

[naviuk]

Hey Richard

Just a question, for the HKS, how difficult would it be to swap the grounding option for the White wire?

So my theory is rather run the evc ground from the aquamist, in a failsafe it cuts ground thus turning the EVC off. this would force the car to run spring pressure.

Is this an option if i sent you my unit?

Thanks!

[Richard L]

Brown, white and black are the contacts of the failsafe relay.

White = common
black = normally closed
brown = normally opened

Under the normal operating environment, aquamist keeps the failsafe energised until some goes wrong. This means brown and white are connected.