6
Part #FAST4-101
Revised 7/9/07
FAST™
3400 Democrat Rd.
Memphis, TN 38118
Phone: (901) 260-3278 Fax: (901) 375-3408
www.fuelairspark.com
FACTORY SPECIFIC: (Ford Mod, Hemi, LS1, etc.)
Newer factory engines have a variety of complicated trigger wheel arrangements. The XIM™ is pre-
programmed to decode these different signal frames. Simply connect the factory crank and cam
pickups to the XIM™ and wire the EST/COIL outputs in the engine’s firing order. EST/COIL output
A always goes to cylinder #1.
XIM™ EST/COIL Wiring for Different Factory Engines
EST/COIL Output
A
B
C
D
E
F
G
H
Position in Firing Order
1
ST
2
ND
3
RD
4
TH
5
TH
6
TH
7
TH
8
TH
Cylinder # (Ford Mod, Waste Spark) - COIL
1&6
3&5
7&4
2&8
Cylinder # (Ford Mod, Coil per Cylinder) - COIL
1
3
7
2
6
5
4
8
Cylinder # (Chrysler Hemi) - COIL
1
8
4
3
6
5
7
2
Cylinder # (GM LS1/LS6 & LS2/LS7) - EST
1
8
7
2
6
5
4
3
External LEDs
The XIM™ features four LEDs built into its case. They are a valuable tool for confirming basic
functions.
POWER
– This LED lights up when the XIM™ is switched on.
CRANK
– This LED lights up while the XIM™ is receiving input from the crank sensor. If it is not lit
while the engine is turning over, you will need to find out why before the engine will run. Check that
the crank sensor is properly installed and plugged in. Also check for any wiring damage between the
crank sensor and the XIM™.
CAM
– This LED flashes each time the XIM™ receives an input from the cam sensor. It will flash
relatively slowly during cranking. The flashing will become more rapid with increasing engine speed.
If it is not flashing while the engine is turning over, you will need to find out why before the engine
Crank
Input
Cam
Input
1-10*
BTDC
TDC #1
11-90*
BTDC
(Shown at 60*)
A
B
C
D
E
F
G
H
EST/COIL
Output
1
8
4
3
6
5
7
2
= Spark, approx.
30* BTDC
XIM™ – OE Crank Trigger Ignition Strategy
(One complete engine cycle shown for Small Block Chevy with 1-8-4-3-6-5-7-2 firing order)
= TDC (compression)
for each cylinder
