Nihilo Concepts Canister Removal Dongle for KTM, Husqvarna & GasGas Offroad Motorcycles

The Nihilo Concepts Canister Removal Dongle (NCCRD) is an electronic bypass terminator engineered for fuel-injected KTM, Husqvarna, and GASGAS dual-sport and off-road motorcycles equipped with factory evaporative emissions (EVAP) systems. Factory dual-sport models route fuel tank vapor through an electronic purge valve (solenoid) and a bulky charcoal canister mounted low in the chassis or subframe. During technical off-road riding, the canister is vulnerable to rock roost, branch strikes, and mud buildup, and tip-overs can cause liquid fuel to saturate the charcoal matrix, leading to hard-starting conditions, engine bogging, and vapor lock.

Removing the mechanical EVAP hardware frees up chassis space and eliminates vapor saturation issues. However, simply unplugging the OEM purge solenoid valve breaks the circuit continuity monitored by the engine control unit (ECU). The ECU detects an open circuit fault, triggering a persistent Malfunction Indicator Lamp (MIL) Check Engine light and logging diagnostic trouble codes. The Nihilo Concepts NCCRD dongle plugs directly into the factory wiring harness connector, matching the internal resistance and electrical load signature of the OEM solenoid. This satisfies ECU circuit diagnostics and prevents error codes or dashboard warning lights without requiring ECU re-flashing.

Features:

• MIL / Check Engine Light Elimination: Delivers the exact electrical resistance expected by the OEM ECU to prevent open-circuit fault codes and flashing dash lights.

• Plug-and-Play OEM Connection: Uses factory-matched automotive-grade sealed connectors that snap directly into the stock wiring harness with no cutting, wire stripping, or soldering.

• Hermetically Sealed Housing: Solid-state resistor circuitry encapsulated in a waterproof, vibration-damped polymer housing to withstand high-pressure washing and harsh trail environments.

• Simplifies Fuel Tank Venting: Allows complete removal of the OEM charcoal canister, bracketry, solenoid valve, and routing hoses for weight reduction and cleaner cockpit lines.

• Vapor Lock Prevention: Eliminates hot-start stalling and fuel-starvation issues caused by fuel-flooded EVAP canisters during steep off-camber drops and tip-overs.

• Compact Footprint: Miniature in-line profile tucks securely along frame rails or beneath the fuel tank without interfering with radiators, wiring bundles, or bodywork.

• Made in the USA: Designed, engineered, and assembled by Nihilo Concepts in the USA.

What's in the Box:

• 1x Nihilo Concepts Canister Removal Dongle (Part #NCCRD)

• 1x Heavy-Duty UV-Resistant Zip Tie for Harness Securing

• 1x Installation Instruction Sheet

Fitment:

• 2017–2027 – KTM 250 EXC-F, 350 EXC-F, 450 EXC-F, 500 EXC-F

• 2020–2027 – KTM 350 XCF-W, 500 EXF-W

• 2014–2027 – KTM 690 Enduro R, 690 SMC-R

• 2017–2027 – Husqvarna FE 250, FE 350, FE 450, FE 500

• 2016–2027 – Husqvarna 701 Enduro

• 2024–2027 – GasGas ES 350, ES 500

• 2022–2027 – GasGas ES 700

Fitment Notes:

• Motorcycle Compatibility: Fuel-injected KTM, Husqvarna, and GASGAS dual-sport and cross-country models factory-equipped with an EVAP canister purge solenoid valve:

• Competition Off-Road Models: Closed-course competition models (SX-F, XC-F, FC, FX, MC-F) do not come from the factory with charcoal canisters or solenoid valves and do not require this dongle.

• Emissions Notice: For closed-course competition use only. Removing emissions control equipment on public highways may violate federal, state, and local vehicle regulations.

• Intake Port Vacuum Capping (Critical Step): Removing the charcoal canister involves disconnecting two primary vacuum/vent hoses. One hose runs from the fuel tank cap/neck to the canister; the second hose runs from the solenoid valve directly to a brass vacuum port on the throttle body/intake manifold. When removing the solenoid,you must plug or cap the brass intake manifold vacuum port with a heavy-duty, fuel-resistant rubber vacuum cap and clamp. Leaving this port open creates an unmetered air leak downstream of the throttle plate, causing a dangerously lean air-fuel ratio, erratic idle, popping on deceleration, and high engine operating temperatures.

• Fuel Tank Vent Routing: Once the canister and one-way check valves are removed from the chassis, the fuel tank vent nipple must be re-routed. Run a length of dedicated, fuel-safe vent line from the gas cap or tank vent nipple down through the steering stem or behind the frame downtube, terminating beneath the engine skid plate. Ensure the line is free of tight kinks and terminates open to the atmosphere so the fuel tank breathes freely without pulling vacuum or building internal pressure under hot riding conditions.

• Connector Location & Dielectric Sealing: On most KTM/Husky/GASGAS 250–501 models, the OEM purge solenoid is mounted beneath the rear of the fuel tank or adjacent to the throttle body.

  1. Disconnect the motorcycle’s negative battery terminal before unplugging the solenoid.

  2. Unclip the factory wire harness plug from the solenoid valve.

  3. Apply a small dab of dielectric grease to the terminals of the NCCRD dongle to prevent water ingress and pin oxidation.

  4. Snap the dongle into the harness connector until you feel and hear the positive mechanical locking tab engage.

  5. Secure the dongle securely against an adjacent main frame spar or harness loom with the included zip tie to prevent it from rattling against the engine head or cylinder.

Part Number: NCCRD