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HKS EVC IV Installation ???

tang0

By tang0,
in Engines & Forced Induction

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tang0 Proficient

tang0

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All,

Managed to get some time at the weekend to install my evc IV, i've had it sat around for ages, was on my mr2 turbo, then the wifes pulsar gti-r - now both cars have gone, it i reclaimed it for the skyline ... anyway, having installed it both on the mr2 and the pulsar, thought it would be a fairly straight forward job on the line as well ....

well, i STRUGGLE to find a pre-intercooler port to T off for the valve controller, it requires a pre intercooler, post intercooler (throttle body) and actuator plumbing ..

my question is this - I cant be the only person to have installed one of these - where do you get the pre intercooler connection from ????

cheers

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tang0 Proficient

tang0

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I know WHAT is needed, its WHERE

yes there are dozens of post intercooler outlets, and thats fine, its the PRE intercooler ... could not SEE anywhere to T off from, unless there is something i couldn't see / feel ...

Where would your waste gate normally get pressure from? that is where you T in the pre intercooler.

Post Intercooler, anywhere on the head with pressure.. there are dozens.

GTR-Ben Proficient

GTR-Ben

Posted
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Well obviously you have a stock turbo... and the stock turbo has to have a wastegate.. this wastegate has a pipe the gets pressure, normally off the side of the turbo compressor housing.

This is where you take the pressure for the boost controller. Then the out of the Boost controller goes to the wastegate.

tang0 Proficient

tang0

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and i say yet again, i know WHAT i need to find, its where to find it

the actuator has a pipe that goes to the actuator solonoid, the thing that controls 5 or 7 psi, this in turn has 2 pipes comming from it, both which seem to go to the post intercooler line ....

on the other cars i have fitted an evc to, the watstegate actuator has its line plumbed directly to the pressure side of the turbo housing ... THIS (as you correctly state) is what i am looking for, but there does not seem to be a connection on the pressure side on the turbo house on this turbo.

and yes, it is a standard turbo.

/me sighs

i'll be back under the bonnet at the weekend to try and look for it.

Well obviously you have a stock turbo... and the stock turbo has to have a wastegate.. this wastegate has a pipe the gets pressure, normally off the side of the turbo compressor housing.

This is where you take the pressure for the boost controller. Then the out of the Boost controller goes to the wastegate.

GTR-Ben Proficient

GTR-Ben

Posted
Posted

Ah I see, i forget about the solenoid.

I have ran all my EVC boost controllers with pressure post intercooler from the pleenum. This is on a GTR.

On GTS-Ts etc I had always ran them pre intercooler It dosn't really seem to make any difference.

I would just take the pipe that supplies pressure to the solenoid (the other one will be a bleed) even if it is post intercooler.

But if you are really worried about long pipe length and the EVC not getting the signal fast enough.. just tap into your intercooler pipe. Drill a hole.

rb25 Grand Master

rb25

Posted
Posted

SOLENOID

------------

|......Port 1.|---> intercooler pipe where the standard wg actuator plumbs (before throttle body)

|......Port 2.|---> to the wastegate

|......Port 3.|---> to T-piece in the fuel pressure reg line (manifold - FPR)

-------------

-rb25

tang0 Proficient

tang0

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Thanks for all the post but OMG !!! are people NOT reading my posts !!!

I KNOW HOW TO PLUMB IN THE EVC

i am asking WHERE a PRE intercooler outlet is, NOT what it goes to on the EVC

sorry for the outburst

GTR-Ben -

the reason to get that feed pre intercooler is so that the evc is not overworking the turbo, to get, lets say 10 psi, at the plenum the turbo has to work harder than if you measure to get 10 psi at the tip of the turbo housing, this is because the turbo has to work to pressurise the whole of the intake system before you start measuring at the plenum.

The EVC IV has the inputs to read pre and post intercooler, as rb25 points out, this is port number 3 it then calculates the offset between the 2 and delivers the output required ....

anyway,

didn't get a chance to look for it at the weekend, and don't like the idea of looking for it after work, when the turbo is nice and hot, and its a bit dark ... guess it'll have to wait until this weekend when the wife has friends over ! :D

and I already have the EVC IV manual pdf'd in case anyone wants it ...

thanks anyway

tang0 Proficient

tang0

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um

thats not right

have been under the bonnet this afternoon (working from home is great !)

anyway, the solonoid has TWO pipes, one that plumbs back to the inlet (post afm, pre turbo) and one that goes to the actuator. There is DEFFINATLY not an outlet pre intercooler ...

its looking like i either stick with a post intercooler feed, or drill and tap a hole :cheers:

The stock solenoid has has 3 lines.  1 goes to wastegate, 1 is a bleed return line, which plumbs into the AFM to turbo inlet pipe - this is for emissions purposes.  The last one, is the pressure line from the turbo oulet.

So, it is just a process of elimination.

tang0 Proficient

tang0

Posted
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be screwed if I could tell !!!

there is DEFFO 2 lines comming from solonoid, DEFFO one goes to actuator, and one goes back to pre turbo inlet ...

VERY strange ..

am taking line from post intercooler currently, and its working, although i am getting a few spikes, ebc is set to .7 of a bar, and comming off boost under hard driving will spike to .8, and running uphill slightly under hard boost will be running at .75

anyway

if anyone wants to have a look, and is in the shire, then please feel free to pop over and see ..

well if it has TWO lines, where does the pressure come from to open the wastegate??????
GTR-Ben Proficient

GTR-Ben

Posted
Posted

Well as I said, every GTR I have ever seen or installed a EVC on has got pressure post intercooler.. should be ok for your car too.

Yes I know it's best to get the reading pre intercooler so it's getting the actual pressure the turbo is creating.. but unless you have a huge pressure drop at your intercooler.. it's really not going to matter.

It has never caused me any problems.. a .05bar spike is ok

There must be a line that feeds pressure to the wastegate solenoid or you would be free boosting..?

tang0 Proficient

tang0

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The line to the wastegate isnt via a T peice is it?

possibly was, cant remember now

but now you mention it, it could well have been ....

be interested for someone to check out their standard setup and see what goes where

am just using the post that is post intercooler and making do with that ....

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