Advanced CDI / ECU Ignition Unit for Honda NTV650 / Revere MN8 (1988–1997)

Carmo Electronics CDI / ECU Ignition Unit for Honda NTV650 RC33 / Revere

Modern digital ignition for easier starting, smoother running and improved reliability

• Direct Plug & Play installation: Connects to the original wiring connectors without modifying the wiring harness.
• Optimised ignition curve: Improves throttle response, engine smoothness and power delivery.
• Starting mode: Produces a stronger spark during starting, particularly useful for cold starts.
• Comprehensive protection: Protected against overvoltage, reverse polarity and faulty ignition coils.
• Full 3-year warranty: High-quality Carmo Electronics engineering, developed and manufactured in the Netherlands.

The Honda NTV650 RC33, also known as the NTV650 Revere, is a dependable V-twin renowned for its durability. However, its original CDI / ECU ignition unit is often several decades old. As a result, starting difficulties, irregular running, hesitation or complete ignition failure can become increasingly common.

This modern digital CDI / ECU ignition unit from Carmo Electronics has been developed as a direct replacement for the original Honda unit with OEM number 30410-MS9-610. It retains the original fitment and Plug & Play installation while adding modern digital control, improved electrical protection and more precise ignition timing.

Thanks to its optimised ignition advance curve, the engine responds more directly to throttle input and delivers power more smoothly during acceleration. This makes the NTV650 feel more responsive and refined, particularly at low and mid-range engine speeds, without changing the original character of the motorcycle.

This unit can also make a noticeable difference when starting the engine. During starting, the CDI activates a dedicated starting mode that temporarily controls the ignition coil to produce a stronger spark. This helps the engine start more easily, especially during cold starts, with fluctuating battery voltage or after the motorcycle has been left unused for an extended period.

An important advantage over the original unit is its built-in electrical protection. The Carmo CDI is protected against overvoltage, which can be caused by a faulty voltage regulator, a defective battery or incorrect use of a jump starter. It is also protected against faulty ignition coils and accidental reverse battery polarity. This makes it more than just a replacement part: it is a serious reliability upgrade for your NTV650.

Please note: does your original unit have an additional wire alongside the two connectors? Mention this in the order notes during checkout so that the correct version can be supplied.

Suitable for, among others

• Honda NTV650 RC33 CDI / ECU / ECM ignition
• Honda NTV650 Bros CDI / ECU / ECM ignition
• Honda NTV650 Revere CDI / ECU / ECM ignition
• Honda NTV650 Hawk CDI / ECU / ECM ignition
• Honda NTV600-K Revere CDI / ECU / ECM ignition
• Model years: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998

Replaces, among others

• OEM number: 30410-MS9-610
• OEM number without hyphens: 30410MS9610
• Codes printed on the unit: MS9 / MS-9 / 512E1
• Also known as: KWO, KW0, KWOb, KW0b, MS9 512E1

Technical improvements

• Digital ignition control with a precise ignition advance curve
• Acceleration correction for improved throttle response
• Automatic adjustment to fluctuating battery voltage
• Starting mode with a stronger spark during engine start-up
• Protection against overvoltage
• Protection against faulty ignition coils
• Protection against reverse battery polarity
• Stable operation under changing temperatures

Also known as

• CDI
• ECU
• ECM computer
• EC Ignitor
• Ignition Module
• Ignitor
• Spark Box
• Black Box
• Ignition Control Module
• Ignition Spark Control Module

Frequently asked questions

Is this CDI genuinely Plug & Play?
Yes. This unit has been designed as a direct replacement for the original Honda CDI / ECU and connects to the original wiring connectors.

What difference will I notice while riding?
The engine picks up more smoothly, responds more directly to the throttle and runs more consistently. The difference is particularly noticeable during acceleration and at low to mid-range engine speeds.

Can this unit help with starting problems?
In many cases, yes. The dedicated starting mode produces a stronger spark during engine start-up, helping the engine fire more easily.

Is this only a replacement part, or is it also an upgrade?
Both. It replaces an ageing original unit while adding modern digital technology, improved electrical protection and an optimised ignition curve.

What should I do if my original unit has an additional wire?
Mention this in the order notes during checkout. This allows us to check which version is required for your motorcycle.

Is a programmable version also available?
Yes. Carmo Electronics can also supply a fully programmable version. This allows settings such as ignition advance, rev limiter and spark strength to be adjusted.

Give your Honda NTV650 the reliable ignition system it deserves.
With this modern Carmo CDI / ECU, your motorcycle starts more easily, runs more smoothly and benefits from an ignition system designed for many more years of dependable use.

Includes a full 3-year warranty.