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XDI delivers more power because:
* Spark timing is precisely
controlled under all conditions, including rapid engine
acceleration
* Crank trigger eliminates spark
scatter due to gear lash and timing chain stretch
* Accurate spark timing allows
sustained engine operation closer to peak power
timing
* 100% spark energy to 9600 RPM on 6
cylinder and 12,000 RPM on 4 & 8 cylinder applications (at 12 volts)
* Operation up to 20,000 RPM (at
higher battery voltage)
* Long, 1000+ microsecond spark
duration - 60+° duration at 10,000 RPM!
* Built-in timing computer and rev
limiter
* No power draining magnetos or
distributors to drive
* No moving parts to wear out or
replace
* Built-in timing monitor lets you
measure the advance with a voltmeter
* Options include: backup sensor,
dual rev limiter, and remote timing control
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Specially Modified for all
Ferrari 6, 8, & 12 cylinder applications

Remove your distributor, and never look back...
with Electromotive's new eXtreme Direct Ignition
System!
The XDI is the latest ignition system from
Electromotive. This new, configurable ignition system uses a controller with one
or two Direct Fire Units (DFU) to power up to 14 different engine
configurations. The XDI uses Electromotive’s patented direct fire ignition and
it’s high-resolution crank position sensing to produce the most accurate and
most powerful ignition available in the aftermarket.
The Direct Ignition Advantage
A "Direct Fire" ignition fires the spark plugs directly from the coils
and not through a distributor cap and rotor. This is accomplished by using
multiple coils, each with two spark terminals. The coil terminals are connected
to the spark plugs, allowing one cylinder to fire on compression while its
companion cylinder fires simultaneously on exhaust. Open spark gaps in the rotor
and cap are eliminated, making wear and moisture problems a thing of the past.
What sets XDI apart is the ability to charge multiple ignition coils at the same
time. This increased dwell time means that full spark energy is available over
the entire RPM range (up to 9600 at 12 volts). Unlike Capacitive Discharge
systems that only put out one very short spark, the XDI puts out a full energy,
long burning spark at your highest and most critical engine speeds. Long burn
times assure effective burning of even lean fuel mixtures.
The brain of the XDI includes dual digital microprocessors using patented spark
algorithms (patent number RE 34,183), which takes the electrical signal from the
crankshaft sensor, identifies the two missing teeth and then keeps track of the
remaining 58 teeth. The XDI determines engine speed and computes the spark
advance from your knob settings. Setting the timing advance curve is a simple
task that anyone can understand.
In addition to synchronizing and firing the plugs at the correct advance angle,
the XDI also computes the exact dwell to produce 9 amps of coil current. Coil
charging is measured dynamically, so changes in RPM, battery voltage, or
temperature are all accounted for on every spark. This corrects any errors that
are caused by battery voltage or coil temperature changes and insures maximum
spark energy.
High Resolution Single-Crankshaft-Sensor Decoding
Some OEM direct ignition systems use both a crankshaft and a camshaft sensor
assembly, making the system more complicated and more expensive than it needs to
be. Other systems use low resolution, four to ten tooth trigger wheels on either
the crankshaft or camshaft; these are not enough teeth to assure that the coils
are firing without timing errors. The XDI solves these problems with a single,
high resolution, 60-minus-2 tooth crank trigger wheel. This affords resolution
unheard of in any other electronic ignition available today, offering spark
accuracy of ¼ degree of crankshaft rotation. This accuracy makes the system
ideal for the most demanding engines
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