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hks evc6 and aquamist hfs5...fail safe-boost cut

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Old Oct 6, 2008 | 10:55 PM
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hks evc6 and aquamist hfs5...fail safe-boost cut

hello, so there are about 5 wires to HKS evc6 solenoid, which wire do it need to tap?
anyone with evc6 and using fail safe-boost cut method???
help...
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Old Oct 7, 2008 | 08:43 AM
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I've been thinking about using the scramble boost option rather than cutting power to the solenoid. IF you set crable timer to zero it will stay on scramble setting until the circuit is broken. I figured the scramble "button" would be a simple two wire circuit that could be wired into the dds3 then when meth is on and all is well you stay on scrable setting, when meth is off or failsafe detected then you drop to the normal boost map. This should require less wiring than cutting power to the solenoid.

Once I get the EVC VI and the HFS-V wired up I'll post the config.
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Old Oct 7, 2008 | 10:58 PM
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hmm..that sounds interesting...for example, my 'real' target boost is 1.9 bar, then i set 1.2 or 1.3 bar on the 'a mode or b mode' on evc6, then use the scramble function, +0.7 bar and time it zero. so, whole time, evc6 will think...this guy must be crazy, he is using scamble boost control all the time and i get my target boost which is 1.9bar... but if there is any problem, if signal gets cut off to scramble, then it will go back to 1.2 or 1.3 bar that i set up in a/b mode.

i have tried 4 out 5 wires on the solenoid and don't have any luck.

but isn't boost would be more stable if you are using normal set up vs using scramble?? i don't know...just my gut feeling..
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Old Oct 7, 2008 | 11:00 PM
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Hello, Richard from Aquamist...
do you know any solution to this? anyone with SRT4 with aquamist and evc6 fail-safe system?

Last edited by vroomevo; Oct 7, 2008 at 11:05 PM.
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Old Oct 10, 2008 | 05:09 AM
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ya I want an hks EVC 6
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Old Oct 10, 2008 | 07:34 AM
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Originally Posted by vroomevo
hmm..that sounds interesting...for example, my 'real' target boost is 1.9 bar, then i set 1.2 or 1.3 bar on the 'a mode or b mode' on evc6, then use the scramble function, +0.7 bar and time it zero. so, whole time, evc6 will think...this guy must be crazy, he is using scamble boost control all the time and i get my target boost which is 1.9bar... but if there is any problem, if signal gets cut off to scramble, then it will go back to 1.2 or 1.3 bar that i set up in a/b mode.

i have tried 4 out 5 wires on the solenoid and don't have any luck.

but isn't boost would be more stable if you are using normal set up vs using scramble?? i don't know...just my gut feeling..
Well, I don't have the evc6 yet so I can't say for sure, but since there does not seem to be any way to switch from A to B via an external source I figured setting A and or B for low boost failsafe operation then using scramble for Meth armed, all is well operation, would he the best way to go about it, but I'm not sure if scramble allows you to define target tables (boost vs rpm) like A abd B do.
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Old Oct 10, 2008 | 08:41 AM
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Honestly, vroomevo

dont tap the perfect HKS harness, that is an amazing EBC you dont want to effect it, Just put a mac valve in its cheap and and easy and garunteed to work.
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Old Oct 10, 2008 | 10:19 AM
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Originally Posted by vroomevo
Hello, Richard from Aquamist...
do you know any solution to this? anyone with SRT4 with aquamist and evc6 fail-safe system?
Do you have a link to the user instruction? Email it to me if possible: richard@aquamist.co.uk

Does this system uses stepper motor ?
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Old Oct 11, 2008 | 08:39 AM
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i had a copy of the instruction manual somewhere in the computer and can't find it now... i will send you a copy of the manual as soon as i find it.

HKS uses stepper moter.

thanks.
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Old Oct 11, 2008 | 08:42 AM
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Originally Posted by VividRacing.com
Honestly, vroomevo

dont tap the perfect HKS harness, that is an amazing EBC you dont want to effect it, Just put a mac valve in its cheap and and easy and garunteed to work.
hey Evan!! feels like i haven't seen you for...years!
how are you doing?

thanks for your interest in this matter.

so, what is mac valve?? how do i do that?

are you coming down to tucson anytime soon?
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Old Oct 11, 2008 | 08:47 AM
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I know a little bit about them. No need to send, I have found the drawing.

There are two versions. The older version is a pain to control because if you cut the pulse wire or power to the stepper motor/motors, it does not revert back to wastegate. It just stay at the previous boost setting. Can be dangerious if you are not aware of that.

The newer version has sprung loaded so that when you cut power, it revert to wastegate pressure. But it is a slow process. Not good for if you want a fast boost cut.

The only way to disable it is by using a MAC valve to by-pass it. I will try to post up a drawing - do you have an evo8 or evo9?
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Old Oct 11, 2008 | 09:33 AM
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ahh...i c...
thanks again Richard for the reply.

i have orange screen EVC6, i am guessing it is newer version.

i have evo8.

if you can post up a drawing, it would be great. any good mac valve you recommend?
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Old Oct 12, 2008 | 11:35 AM
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I think this drawing will work.

The MAC valve allows the HHS to control boost under the normal conditions, As soon as the failsafe activates, it divert the boost directly to the wastegate, at the sametime blocking off the EVC's port I.




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Old Oct 12, 2008 | 04:18 PM
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awesome!!! thanks Richard.
i will have to look for MAC valve now...
thanks again...
let you know how things go, hopefully, other people can use this MAC valve for HKS EVC6.

Last edited by vroomevo; Oct 12, 2008 at 04:35 PM.
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Old Oct 14, 2008 | 01:59 PM
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Originally Posted by vroomevo
hey Evan!! feels like i haven't seen you for...years!
how are you doing?

thanks for your interest in this matter.

so, what is mac valve?? how do i do that?

are you coming down to tucson anytime soon?

Im great how are you DR.?

I should be coming down to Tucson within 2 weeks.

PM me I know a local with an extra mac valve for sale.
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