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cpark

By cpark,
in Engines & Forced Induction

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Does anyone know whether the hks evc-s boost controller is dual solenoid? Looking for a boost controller for my R34 GTR. Anyone here used one of these before? Cheers

nope, just a MAC valve (or similar)

djr81 Grand Master

djr81

Posted
Posted (edited)

Looking at it I wouldn't think so. The best image of the solenoid is the one on rhd japan and that looks like there is only one.

Blitz do a dual solenoid boost controller - have a look at the ebc (?) or edc (?) cant remember which it is id iii. Google the pic of the dual solenoid - it is a lot bigger than the HKS one.

Edited by djr81
GTSBoy Grand Master

GTSBoy

Posted
Posted

When you say dual solenoid do you mean the ability to change between two preset boost levels ?

Then yes the HKS EVC S does do that

i think he means a solenoid for each turbo (34 gtr) i thought you just tee'd the two wastegate lines together and used a single solenoid controller. could be wrong though never had twin turbo...

Nope to both of these. Dual solenoid boost controllers (like the Blitz) claim to offer better boost control. Even on single turbo - it has nothing to do with twin turbo, and nothing to do with two different settings. Different settings can be achieved with as single solenoid without any hassle. You could have dozens of slightly different settings if you wanted. All you have to do is vary the duty cycle.

XKLABA Grand Master

XKLABA

Posted
Posted

Nope to both of these. Dual solenoid boost controllers (like the Blitz) claim to offer better boost control. Even on single turbo - it has nothing to do with twin turbo, and nothing to do with two different settings. Different settings can be achieved with as single solenoid without any hassle. You could have dozens of slightly different settings if you wanted. All you have to do is vary the duty cycle.

Really ??, would never have known that was the case

The question is why the OP is asking that question cause both posts are relevant depending on what OP wants to know and why cause he may not know how EBCs work and sither of these posts could be what he wants to actually know

djr81 Grand Master

djr81

Posted
Posted

Have the same. I bought a new solenoid unit after one of the two in the original failed.

Back in the olden days (And may still hold true) Blitz used to recommend a single solenoid unit up to a certain psi limit (About one bar I think) and then two above that. When you think about how they work you can see the logic in it.

GTSBoy Grand Master

GTSBoy

Posted
Posted

Really ??, would never have known that was the case

The question is why the OP is asking that question cause both posts are relevant depending on what OP wants to know and why cause he may not know how EBCs work and sither of these posts could be what he wants to actually know

Yeah, I wasn't attacking your post, just clarifying that the various points being discussed were somewhat unrelated.

XKLABA Grand Master

XKLABA

Posted
Posted

Yeah, I wasn't attacking your post, just clarifying that the various points being discussed were somewhat unrelated.

I only asked that to clarify what the OP actually wants to know and why, a few people I have talked to about boost controller think dual solenoid mean dual boost levels which is why I asked, and since every pic of the HKS EVC-s show a single solenoid mac valve

The two HKS units I use both have a stepper motor type controller which is different the what the S uses and they both hold boost perfectly as do most all Jap boost controller, I only EBC I have ever had an issue with is the first EBoost, no matter how we set it up it could not catch the factory RB26 twins as they came on boost to fastter then Eboost to react

No point is it is the controlling unit that makes the biggest difference in how they operate and all the big name Jap stuff is good gear

cpark Rising Star

cpark

Posted
  • Author
Posted

Thanks everyone for their posts. To clarify the question was for dual solenoid as opposed to dual boost settings as I am looking to get a tune done on a power fc with stock turbos but was led to believe that the twin turbos needed a dual solenoid boost controller. Will be looking to upgrade turbos down the track so I have also read that the dual solenoid hold higher boost levels beyond 1 bar more steadily. I was looking into the blitz bc's but their solenoid units are quite large in comparison to others so it is more difficult to hide in the engine bay. Had a greddy profec b II previously in my s15 but not sure how they would go with the twins in the rb. Shame the evc-s unit is only single solenoid as I quite liked the smaller screen and was reasonably priced. Any recommendations would be appreciated or if anyone is looking to sell the ebc let me know. Thanks everyone

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Thanks everyone for their posts. To clarify the question was for dual solenoid as opposed to dual boost settings as I am looking to get a tune done on a power fc with stock turbos but was led to believe that the twin turbos needed a dual solenoid boost controller. Will be looking to upgrade turbos down the track so I have also read that the dual solenoid hold higher boost levels beyond 1 bar more steadily. I was looking into the blitz bc's but their solenoid units are quite large in comparison to others so it is more difficult to hide in the engine bay. Had a greddy profec b II previously in my s15 but not sure how they would go with the twins in the rb. Shame the evc-s unit is only single solenoid as I quite liked the smaller screen and was reasonably priced. Any recommendations would be appreciated or if anyone is looking to sell the ebc let me know. Thanks everyone

upgrade to a modern single turbo in your twin scroll, twin gate, divided rear housing fashion... then you won't need to worry about anything like using a t-piece to control 2x turbos, or worrying about 2x oil lines, 2x oil drains, 2x water lines, 2x dumps etc...

#shotsfired

XKLABA Grand Master

XKLABA

Posted
Posted

I pick up the feed from the plenium run it to the solenoid I fit on the chassis rail under the brake booster then back to the steel line that runs around the back of the head, this eliminates the factory T under the balance tube and keeps the whole setup pretty well hidden, this is on both my R32 and R34 GTRs

i think he means a solenoid for each turbo (34 gtr) i thought you just tee'd the two wastegate lines together and used a single solenoid controller. could be wrong though never had twin turbo...

So this was correct then

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