HKS EVC-S Electronic Boost Controller

[exxon]

Selling my almost new HKS EVC-S electronic boost controller. Used for roughly 3000 km's. I removed it because i'm doing an engine rebuild, and will be installing an external wastegate, so i won't be needing this anymore. It works flawlessly.

Looking for $360 OBO

Some details from HKS:

HKS has created an affordable boost controller with the reliability and ease of use HKS electronics are known for. Called the EVC-S, it has many of the same features of the more expensive HKS EVC 6 but within a display similar to HKS Turbo Timers.

The EVC-S features a solenoid valve specifically designed to accurately control boost pressure up to 250kPa or 36 PSI, 2 boost level settings as well as settings for offset and boost response.

Also included are

Overboost warning with drop boost feature
Peak hold boost readings
After-image display
Data lock and an internal diagnostic function
Designed to be compatible with both internal and external waste gates, the EVC-S also complements the current HKS Turbo Timers and AF Knock Amp.
Display unit is the same design concept as the latest HKS electronic products
and is selectable from kPa to PSI
Factory boost function when power is off
2 control modes (A/B mode)
Basic parameters Offset, Response
Control range of solenoid duty output = 0 - 100%
Diagnosis function for malfunction of boost sensor, solenoid valve or wiring connection

[Blackcossie]

You not using a boost controller at all?

[exxon]

I hadnt planned on it. Gonna be adjusting springs to get desired pressure, and then leave it there.

[r33_gtst]

You will be needing this after your engine rebuild
Wastegste spring is one thing but the electronic boost controller is precise
If your gonna spend all that money on an engine rebuild, do it right. You already have it.
To rely on springs or manual boost controller is old technogy.
With the evc s you can program two different boost settings, shows display of accurate boost, max boost reached and had
A warning built in. I can't grasp why you would downgrade something younger your upgrading the car
Then again I don't know your intentions with the car or plans but my two cents says to keep it
I also paid your asking price for mine brand new over two years ago and they go for about $20 more on rhdjapan right now

[Blackcossie]

The main benift of a good boost controller is better spool. A good electronic boost controller will prevent boost assist to your wastegate until right before you hit your peak boost. With straight wastegate spring the valve will slowly creep open releasing exhaust side pressure early, slowing the rise in boost pressure.

And the fact that you can adjust your boost in car instead of under the hood, actually that's probably the main benift for most users.


Personally I would select a spring that is 75% of your desired boost level and tune the rest in with this boost controller.