Two Brothers Racing Suzuki LTZ400 Dyna FS Ignition - Manual (Page 2)

DYNATEK 164 S. Valencia St., Glendora, CA 91741 800-928-3962 www.dynaonline.com 2
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 increased
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-programmed 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 programmable 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
Troubleshooting the Dyna ignition is simple. If the bike will not start or run at all, reinstall the stock ignition. If this fixes
the problem, then the Dyna ignition should be returned to Dynatek for testing. If this does not fix the problem, then the
problem is somewhere else on the bike. Follow the troubleshooting procedures outlined in your bike shop manual.