ED-N

Electronic Suspension System with External Reservoir
Developed specifically for selected vehicle applications, the ED-N is an electronic suspension system equipped with an external nitrogen reservoir. The system utilizes the vehicle’s original electronic damping connectors directly, requiring no modification to the factory wiring harness while maintaining full compatibility with the OE electronic control system.

While upgrading the vehicle with a high-performance suspension system, the ED-N retains the original electronic damping adjustment function. This allows drivers to benefit from enhanced handling performance while maintaining the convenience of the OE comfort mode and various factory driving modes.

The ED-N features an external nitrogen reservoir design and provides a larger damper oil capacity than the ED-O. The increased oil volume enhances damping stability during extended and high-load operation. The additional oil capacity also helps maintain consistent damper performance during continuous operation, making the ED-N particularly well suited for high-intensity and performance-oriented driving conditions.

The damper features a high-strength monotube design with adjustable ride height, allowing precise suspension setup according to different road conditions and driving requirements.

The damping system features a top-mounted adjustment mechanism with 36-way damping adjustment. Combined with the external nitrogen reservoir and increased damper oil capacity, the system provides more distinct differences between each damping setting, delivering a broader and more perceptible damping adjustment range. This allows for more precise suspension tuning across a wide range of driving conditions, including daily road use, mountain roads, and aggressive performance driving.

Electronic Damping Suspension Technical Overview

The system retains the current-controlled valve utilized by the vehicle’s OE electronic control system while simultaneously optimizing the internal mechanical damping structure. Combined with the increased oil capacity and broader damping adjustment range provided by the external nitrogen reservoir, the ED-N further enhances overall chassis control performance and suspension tuning flexibility beyond the original factory setup.

Product Features
  • Compatible with OE electronic damping control systems
  • Direct-fit OE connector design with Plug & Play installation; no wiring harness modification required
  • Fully retains OE electronic driving mode functions
  • External nitrogen reservoir design
  • Increased damper oil capacity
  • Adjustable ride height
  • 36-way damping adjustment
  • Broader and more perceptible damping adjustment range
  • Enhanced damping stability under high-load and extended operation
  • Balanced comfort and handling performance
  • Suitable for daily road use and high-performance driving

The following outlines the differences in damping characteristics:

FIGURE A - OEM DAMPER CURVE

Figure A illustrates the operating range of the OEM electronic damping system.

The factory system is primarily designed for ride comfort and daily driving stability, featuring:

  • Limited electronic current (ampere) output range.
  • Conservative damping operation window.
  • Relatively narrow overall mechanical damping range.

Due to the smaller total damping range, the proportion of electronic adjustment within a fixed current variation is relatively high. As a result, the difference between drive modes is more noticeable from the driver’s perspective

FIGURE B - UPGRADED COILOVER DAMPER CURVE

Figure B illustrates the damping operating range of our upgraded electronic coilover system.

This product features significant improvements in mechanical design:

  • Increased flow capacity of the damping valve system.
  • Expanded damping operation range.
  • Enhanced low-speed and high-speed damping control range.

The total physical damping range of the upgraded system is significantly greater than that of the OEM setup.
However, since the OEM electronic control system retains its original current output range, within this expanded mechanical range:

  • The proportion of electronic adjustment becomes relatively smaller.
  • The perceived difference between drive modes becomes more subtle compared to OEM.

This is a normal result of enhanced mechanical performance, not a reduction or loss of electronic control functionality. In fact, overall chassis support, stability, and handling limits are substantially improved. For users who prefer more pronounced differences between electronic drive modes, the EDN remote reservoir version is recommended.

FIGURE C - EDN REMOTE RESERVOIR DAMPING CHARACTERISTICS

Figure B illustrates the damping operating range of our upgraded electronic coilover system.

This product features significant improvements in mechanical design:

  • Increased flow capacity of the damping valve system.
  • Expanded damping operation range.
  • Enhanced low-speed and high-speed damping control range.

The total physical damping range of the upgraded system is significantly greater than that of the OEM setup.
However, since the OEM electronic control system retains its original current output range, within this expanded mechanical range:

  • The proportion of electronic adjustment becomes relatively smaller.
  • The perceived difference between drive modes becomes more subtle compared to OEM.

This is a normal result of enhanced mechanical performance, not a reduction or loss of electronic control functionality. In fact, overall chassis support, stability, and handling limits are substantially improved. For users who prefer more pronounced differences between electronic drive modes, the EDN remote reservoir version is recommended.