4
Part #???
Revised ??????
FAST™
3400 Democrat Rd.
Memphis, TN 38118
Phone: (901) 260-3278 Fax: (901) 366-1807
www.fuelairspark.com
Part # FAST4-160
Revised 11/30/09
FAST™
3400 Democrat Rd.
Memphis, TN 38118
Phone: (901) 260-3278 Fax: (901) 375-3408
www.fuelairspark.com
R18 / R19 (rotaries without detents)
R18 and R19 settings are only required for Onboard mode. They are not used with the optional Remote or PC
software. These can be set fully counter-clockwise (minimum setting), fully clockwise (maximum setting), or
any position in between.
Setting Resolution
Min
(full ccw)
(position 1)
Max
(full cw)
(position 3)
R18
Rev Limit 100’s
(RPM) n/a 0 900
R19
Vacuum advance
(°) n/a
0
20
Rev Limiter
SW4 and R18 are both used to set the rev limiter in Onboard mode. Adding the two settings together gives the
rev limit. For example…
SW4 : position 6 = 6,000 RPM
R18 : center of rotation = 450 RPM.
Together, they set the rev limit to 6,450 RPM.
Vacuum Advance
The vacuum advance feature adds an adjustable amount of timing on top of the base timing curve. The full
amount is added at lower load and phased out as load increases. The MAP sensor must be installed (harness
plugged into sensor and a vacuum line run from the sensor to the intake manifold) for this feature to work
properly. In Onboard mode, R19 can be turned fully counter-clockwise to disable the vacuum advance feature.
Status LED
The Status LED on the XIM™ will…
•
Flash briefly once a second to confirm XIM™ is set for Standalone operation
•
Flash an even on/off pattern when started up in flash mode (blue “Flash” wire grounded at key-on.
Used to update firmware in XIM™.)
Tach Output
Pin 30-A3 is a 12V square wave tach output. It is available as a loose Brown/white wire and at pin F of the
“CAM/HALL EFFECT” connector.
Manifold Pressure
73 kPa
Adde
d Tim
ing
R19: Vacuum Advance
87 kPa
