Two Brothers Racing LTZ400 User Manual

Dyna FS Ignition
Suzuki LTZ400 QuadSport / Kawasaki KFX-400
Congratulations on your purchase of a Dynatek ignition. Please take a moment to read these instructions com pletely before installing the ignition. The installation will only take a few minutes, but proper setup for your specific bike will take longer.
The DynaFS ignition was designed to work with the stock coil, coil wire, plug cap, and spark plug. The increase in spark energy from using the DynaFS ignition is enough so that changing any of these will not improve performance, and can cause problems. Use resistor type spark plugs ONLY. Use the stock resistor style spark plug cap.
This kit includes: DynaFS ignition, mounting bracket, mounting spacer, 8” tie wrap, Curve Selector Switch, and instruction sheet. This is a complete kit, and includes everything needed to install the ignition.

Installation

1) Turn ignition key off, and for safety, remove the battery negative (-) cable whenever attempting electrical
work or welding. Locate the stock ignition box, it is mounted to the left side of the airbox, below the riders left leg.
2) Remove the two 8mm bolts that hold the ignition to the bike. Notice the top ignition mounting tab is sandwiched
between the metal frame tab and the plastic airbox. The lower bolt uses a square nut. Careful not to lose the square nut, it can fall out of its slot.
3) Unplug the stock ignition, taking care not to damage the harness connector. There is a small tab on the harness
connector that must be pushed in to unplug it. Remove the stock ignition from the bike. Keep the stock ignition in a safe place - it may be required for troubleshooting.
4) Place the Dyna ignition in the supplied brackets and bolt it to the stock ignition mounting location. Plug the Dyna ignition in. Plug in the Curve Selector Switch. Zip-tie any loose accessory wires to the frame.
4) Mount switch in desired location. You may want to mount it so that it is easily accessible for initial tuning. Do not cut or lengthen the wires!

Calibration

The Dyna FS ignition is preprogrammed with 4 timing curves. The curves are selected by the curve selector switch. Removing the switch will cause the ignition to default to the curve in position 4(labeled STOCK on the curve switch) which is the stock timing curve.
Curve 4 is identical to the curve that came with the stock ignition module. Due to improved microprocessor control and significantly higher spark energy, the performance of this curve will be enhanced. A quicker throttle response and increase d power over stock is still achieved with the stock ignition curve. For the other 3 timing curves, see the attached chart for the timing information.
Use of this ignition may require rejetting of the carburetor to supply more fuel to maximize performance gains. If you are unsure of this tuning process, the services of a competent mechanic should be employed. Curve 4, the stock curve, is least likely to require any sort of jetting adjustment.
Using the other curves may result in a lean misfire condition at high RPMs when the jetting is not properly set. Do not operate the engine in a lean condition for extended periods or damage may result.
This ignition will allow the engine to rev to a higher RPM than what it has before. The rev limit is programmable from 2000rpm to 12,000rpm. Stock rev limit is 9100rpm. The revlimit is pre-programm ed to 10,500. Because the rev limit is increased, the performance limits of other engine parts (valvetrain for example) may be found. It may be necessary to replace these parts for best engine performance. Consult with an engine builder for answers on what works best for your engine.

Programmable ignitions

Lap-top/PC Programmable versions (suffixed with a P in the part number) require a separate programming kit to reprogram them. It is not supplied with the ignition. If the programm able ignition was not purchased directly from Dynatek, the dealer may have programmed a custom set of ignition curves. The dealer should be consulted with any questions regarding the curves that are programmed into the ignition.
The Launch RPM is programmable and can be wired to a separate clutch switch (not included) for a “two step/low side” launch limiter. See attached wiring diagram for installation.
Programmable ignitions are shipped with additional leads coming out of the ignition. These leads allow the ignition to control other features. To program these features, follow the instructions in the programming kit.
PURPLE – Programmable launch limiter. Ground this wire to activate (requires separate clutch switch) GREEN – Tachometer output, for a standard 12v, two pulse per rev aftermarket tach. WHITE – Optional 2-amp switch to ground, referenced as “Power Jet” in PC Software. BLUE – Optional 2-amp switch to ground, referenced as “PV Solenoid” in PC Software.
The White & Blue 2-amp switches can be used to activate a solenoid or relay. Connect the relay with hot +12v wired to one side of the relay coil, and the other side connected to White or Blue. When the rpm activates the switch, it will be grounded inside the ignition box, causing current to flow through the relay coil. DO NOT connect any device which requires more than 2 Amps (Amps=Volts/Resistance). See attached wiring diagram for wiring the relay.

Troubleshooting

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