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INSTRUCTIONS
FAST™ XIM™
Thank you for choosing FAST™ products; we are proud to be your manufacturer of choice. Please
read this instruction sheet carefully before beginning installation, and also take a moment to review the
included limited warranty information.
XIM™ Unit Installation
The XIM™ unit itself is designed to withstand under hood temperatures but needs to be mounted in a
location that allows for some airflow in and around the heat sink. Also keep in mind that the XIM™ is
not 100% waterproof and should not be mounted where it will be exposed to direct spray. It is also
good practice to mount the XIM™ with the connectors facing down. Typical installation locations
would be on the firewall or inside the vehicle cockpit.
Wiring
These wiring installation instructions are specific to the wiring harnesses manufactured by FAST™
only. If you are using a wiring harness other than the ones offered by FAST™, please contact your
dealer for instructions for that harness.
FAST™ wiring harnesses are labeled on each of the connectors to simplify installation. Your
application may not require the use of all the connectors in the harness. And not all harnesses will
include every connection listed below. You may also require additional accessories such as relays,
sensors and other specialized connectors to complete your installation. All of these are available for
purchase from FAST™.
Crank:
This connector simply plugs into your crank pickup. Depending upon your application, it may be
found near the harmonic balancer or towards the back of the engine near the flywheel. The crank
sensor is used by the XIM™ to determine crank speed and position.
Cam:
This connector plugs into the cam pickup. Depending upon your application, it may be found on the
end of one of the cylinder heads or the front of the intake manifold area. The cam sensor is used by the
XIM™ to find the start of the firing order.
CAM HALL EFFECT:
This connector plugs into the CAM HALL EFFECT connector on your FAST™ XFI™ Main Harness.
This connection feeds cam and crank signals from the XIM™ to the XFI™. The XIM™ crank and cam
outputs are always wired to the XFI™ discrete crank and discrete cam inputs regardless of what type
of pickups (inductive or discrete) are connected to the XIM™.
FAST™
3400 Democrat Rd.
Memphis, TN 38118
Part #FAST4-101
Phone: (901) 260-3278 Fax: (901) 375-3408
Revised 7/9/07
www.fuelairspark.com
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Summary of Contents for Fast XIM
- Page 1 The XIM™ unit itself is designed to withstand under hood temperatures but needs to be mounted in a location that allows for some airflow in and around the heat sink. Also keep in mind that the XIM™ is not 100% waterproof and should not be mounted where it will be exposed to direct spray. It is also good practice to mount the XIM™...
- Page 2 • If after checking all of these items, you still cannot get a status light on the XIM™, call the FAST™ EFI HELP™ line at 1-877-334-8355 for assistance before starting your engine.
- Page 3 LS1/LS2/LS6/LS7 engine harness. COILS: This connector plugs into the FAST™ coil harness that comes with your XIM™ unit for the Mopar Hemi applications. One coil harness is used with a 5.7L engine and another is used with a 6.1L engine.
- Page 4 But other locations are permissible with appropriate coil wiring. The XIM™ has two sets of outputs for controlling coils – EST and COIL. The type of coil being used determines which set of outputs is needed.
- Page 5 Unlike a “coil per cylinder” setup, the number of EST/COIL outputs used is only equal to half the number of cylinders. On a “waste spark” V8, the XIM™ fires the first four EST/COIL outputs and then starts back over at A. The sequence is: A–B–C–D–A–B–C–D-…...
- Page 6 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.
- Page 7 CAN wiring. A flashing status LED indicates that the XIM™ is in flash mode. This is used to update the software in the XIM™. If flash mode was entered accidentally, make sure the FLASH wire is not touching ground and power cycle the XIM™.
- Page 8 Blue Limited Warranty FAST, Inc. warrants that all of its products are free from defects in material and workmanship for a period of 1 year from the date of purchase. This limited warranty shall cover the original purchaser. FAST, Inc.’s obligation under this warranty is limited to the repair or replacement of its product. To make a warranty claim, the part must be returned within 1 year of purchase to the address listed below, freight prepaid.