Dynatek • 164 S. Valencia St. Glendora CA 91741 www.dynaonline.com 800.928.3962

User Manual

Parts List

FI ControllerInstallation GuideWire tapWire tiesVelcro® StripAlcohol Swab

2001-2005 Harley-Davidson Softail

Part Number DFCH-4

2801189 REV. 5-18-05

Congratulations on your purchase of this Dynatek product. Please take a moment to read these instructions completely before

installing the FI controller. The installation will only take a few minutes,but proper setup for your specific bike will take longer

Remove the seat. Remove or raise the fueltank. The tank needs to be raised enough togive access to the fuel injectors and TPSwires.

Unplug the front injector. On the FI Controller,there are 2 pairs of injector connectors. Plugthe pair with the orange wires into the frontcylinder injector harness and front cylinderinjector. Repeat this using the other connector pair and the rear cylinder injector.

Locate the TPS connector behind the throttlebody.

STE

P1

STEP 3

STEP 2

Installation

Part# DFCH-4 2

Rear Cylinder Injector Front Cylinder Injector

TPS Connector

STE

P3

STE

P2

STEP 1

Unplug the connector from the TPS. Crimpthe wire tap onto the wire that is grey with apurple stripe. This wire should be in position"C" on the connector. Plug the grey wire fromthe FI Controller into the wire tap.

Run the wiring harness for the FI Controllerfrom the engine to the seat. Make sure that itwill not get damaged when you reinstall thetank. Use one of the wire ties to tie the wiresto the frame, away from the cylinder head.

Place the FI Controller where you plan onmounting it permanently. In most cases, thiswill be under the seat. Connect the groundlug (black wire) to a grounding point on thebike. Use the Velcro tape to mount the FIController in position. Use alcohol swab toclean mounting surface prior to attachingVelcro.

Reinstall fuel tank and seat.

STE

P4

STE

P6

STE

P5

STEP 4

STEP 6

STEP 5

Installation

Part# DFCH-4 3

FI Controller

For Tech Support: 800.928.3962

ControlsThe FI Controller is preprogrammed with 4 base fuelcurves. The curves are selected using the switchlabeled BASE. These curves adjust fuel deliverybased on throttle position and RPM, providing theright amount of fuel under all conditions. The 4 fuelcurves correspond to varying levels of performance modifications. The levels of modification are brokendown into the following groups.

Base Curve 1 - Stock or basic modifications. Thisincludes slip on exhausts, intakes, air boxes, and airfilters.

Base Curve 2 - Bolt on modifications. This includesfull exhaust systems.

Base Curve 3 - Motor modifications. This includescams, big bore kits.

The fourth curve has all of the fuel adjustment valueszeroed out. This curve is selected by moving therotary switch to any position other than Base 1, Base2 or Base 3. This curve is useful for those wanting tojust modify the fuel delivery with the potentiometer adjustment, without having any other adjustments.

In addition to the 4 curves, there are 3 potentiometersthat allow you to fine tune the curve you select. Thesepotentiometers allow you to adjust the fuel curve from+20% to -20% in 3 different RPM ranges. The RPMranges are:

LOW Idle - 2000 RPMMID 2000 - 4000 RPMHIGH 4000 - 6000 RPM

To add fuel, turn the potentiometer clockwise. Tosubtract fuel, turn the potentiometer counterclockwise.With the potentiometer pointed straight up at the thicktick mark (towards the Dynatek logo), that is 0%adjustment. Fully counterclockwise is -20%, and fullyclockwise is +20%. Adjusting the potentiometerbetween these points will result in adding or subtractingan amount of fuel proportional to how far the knobwas moved from zero.

CalibrationTo select the right curve, start by making sure that all3 of the RPM pots are set to zero adjustment. Thenselect the base curve which corresponds to the bikeslevel of modification. This should make the bike runbetter at all RPMs. The AF ratio if measured on adyno should be much smoother throughout the RPMrange than without the FI Controller. If it feels worseor the AF ratio gets too lean at any RPM compared tostock, try a different curve.

Once you have selected the correct curve, then youcan fine tune any problems with the map by using thepotentiometers. With the arrows on the pot straight upand down, the pots are at 0% adjustment. To addmore fuel, turn the pots clockwise. To subtract fuel,turn the pots counterclockwise. Do not attempt toadjust while riding!

TroubleshootingIf the STATUS LED does not come on when the ignition is switched on, there is no power to the FIController. Make sure that you have the groundhooked up properly either directly to the batteryground, or to a lug on the frame that is grounded.

If the LED comes on, but does not run on one or bothcylinders, double check all connections at the injector,making sure the connectors are seated properly.