Below is a general manufacturer product group description. Please note the information below is not item specific. Item specifics are above in product details.

New Electronic Boost Controller Provides Precise Measurement and Control — HKS USA, Inc. announces the arrival of its newest boost controller – the EVC-S. By including the most popular features of the EVC, EVC-S offers performance enthusiasts an affordable solution to accurate electronic turbo boost control.
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 wastegates, the EVC-S also complements the current HKS Turbo Timers and AF Knock Amp.
Functions and features of the EVC-S include:
Affordable model of the HKS EVC series
Specially designed solenoid valve for boost control function
Compatible with internal and external wastegates
Junction connection system allows display unit, solenoid valve and boost sensor to be directly connected to the control unit enabling an easy installation.
Display unit is the same design concept as the latest HKS electronic products and is selectable from kPa to PSI

Easier installation

Each unit connects independently to the center control unit which processes all signals
Thin display unit enables free layout

Unified Design

The same design as A/F Knock Amp. and other HKS electronics
Unified design for whole HKS electronics product line-up

Price conscious model with specific functions

2 control modes (A/B mode)
Basic parameters Offset, Response
Control range of solenoid duty output = 0 – 100%
Warning, Drop boost functions
Peak hold, After image display indication functions
Applicable for both internal and external wastegate types
Factory boost function when power is off
Data lock function
Diagnosis function for malfunction of boost sensor, solenoid valve or wiring connection