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TCFI5 – Race ECU – HD Twin Cam – 2011-2017 Dyna and Softail – 2014-2022 Sportster

Price range: $499.75 through $1,236.75

TCFI Gen 5 Fuel Injection Controller for Twin Cam w/o ETC, w/Can: Including 2012-2017 Dyna® and Softail® and all 2014-2022 Sportster EVO.

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SKU: N/A Category: EFI - Autotune - TCFI (TC 2001-2017)

Description

TCFI5 Race ECU – Built for 2011-2017 Dyna® and Softail® and 2014-2022 Sportster® with CAN Bus

Not legal for sale or use in California or on any pollution controlled vehicles.

In 2011, Harley-Davidson® made a significant change to the way their bikes communicate internally. Dyna® and Softail® models moved from the older 36 pin single connector J1850 system to a dual 18 pin Delphi® connector with a CAN data bus — the same type of high-speed communication network used in modern automotive applications. Sportster® models followed with the same architecture starting in 2014.

This newer CAN bus system is more capable than its predecessor, but it also means the older TCFI4 will not work. The TCFI5 was engineered specifically for this dual 18 pin CAN bus architecture, giving riders on 2011-2017 Dyna®, Softail®, and 2014-2022 Sportster® models access to the same full race ECU capability that Twin Cam builders have relied on for years.

If you are unsure which system your bike uses, the easiest way to check is to look at the ECU connector under the seat. A single large connector with 36 pins means you need the TCFI4. Two smaller connectors with 18 pins each means your bike uses CAN bus and the TCFI5 is your correct unit. This system has been tested on engines up to 145 CID and over 250 HP.

Important compatibility notes:

Not compatible with 2001-2013 Twin Cam models with the single 36 pin connector and J1850 data bus — use TCFI4 instead.
Not compatible with 2008-2013 Twin Cam Touring models with electronic throttle control 73 pin connector — use TCFI6 instead.
Not compatible with 2014-2016 Twin Cam Touring models with electronic throttle control — use TCFI7 instead.
All 2002-2017 V-Rods utilize the VRFI4
All 2017+ M8 engines utilize either M8FI G8 (2017-2020) or M8FI G9 (2021-2024).

Key Features

The TCFI5 is built for serious performance tuning. As a result, it includes the following features:

Plug-in replacement for the dual 18 pin Delphi® controller with CAN data bus
Alpha-N (throttle position and RPM based) fuel control — eliminates issues with long duration and high overlap camshafts
Auto-tune fuel curves for front and rear cylinders on a dyno or on-road via the included WEGO IIID dual channel wide-band oxygen sensor interface
Includes Bosch LSU 4.2 wide-band sensors for both front and rear cylinders
Fully programmable ignition advance curves — same proven control as the TC88/TC88A systems
Fully programmable idle air control, idle RPM, and cold start characteristics
Extended data logging — Anytime the engine is running, the ECU is saving and storing data. The built in ECU memory stores 60 minutes of operating data at 10 samples per second. The information is stored in a continuous loop, after 60 minutes it starts to overwrite the initial stored data.
Programmable user input for two step RPM limiting, nitrous retard, and shift kill
Programmable user output for shift light, nitrous activation, and electric shifter
Full CAN data bus support for instrument cluster and TSM/TSSM communication
Speedometer and odometer recalibration via PC Link software
Billet aluminum housing with black anodized finish
Easy plug-in installation

Why Alpha-N Fuel Control?

Most competitor products that interface with the stock Delphi® controller still rely on speed-density fuel control. Unfortunately, long duration and high overlap camshafts cause problems with manifold pressure — particularly at idle and cruise RPM. Speed-density fuel control simply cannot cope with these conditions.

In contrast, the TCFI5 uses Alpha-N fuel control — the same technology used in high-end automotive racing systems. Alpha-N is based on throttle position and RPM, eliminating any dependence on manifold pressure. The result is consistent, reliable fuel control regardless of camshaft specifications.

Auto-Tuning With the WEGO IIID

The included WEGO IIID dual channel wide-band oxygen sensor interface allows you to auto-tune fuel tables while riding — no dyno time required. Simply program your desired air/fuel ratio targets and the system does the rest. In addition, auto-tuning under real riding conditions typically takes only a few hours and produces more realistic results than dyno tuning alone.

PC Link Software – Free Download

PC Link software is included at no charge and runs under Microsoft Windows XP, Vista, 7, 8, 10 and 11. It gives you full control over all engine control tables and parameters, including:

3D ignition advance tables
3D air/fuel ratio tables
2D cold start enrichment and idle air control tables
Programmable user input and output functions
Speedometer and odometer recalibration

The TCFI5 connects to your PC via a USB adapter and cable that is included with the unit. The USB interface plugs into the “add-on four pin” Daytona Twin Tec diagnostic connector. This connector will either be located on the WEGO IIID unit or it will be added into the the OE dual 18 pin motorcycle wiring harness. The software will also run in demo mode without a TCFI5 connected.

Data Logging Software – Also Free

The TCFI Log software gives you comprehensive data logging and diagnostic capability. Specifically, it allows you to:

Display real time engine data during dyno testing
Download and review the last 60 minutes of operating data at 10 samples per second
View elapsed time across 13 RPM bands from idle to 6999 RPM
Track maximum engine RPM and time spent at the RPM limit
Review and clear historical diagnostic codes
Display operating statistics in histogram chart format

Like PC Link, TCFI Log is a free download and runs in demo mode without a TCFI5 unit connected.

Available Models

17600 – TCFI5 with Wideband Sensors — Race ECU 2011-2017 Twin Cam Dyna/Softail with Dual 18 pin Delphi® and Can Bus without ETC (w/o Electronic Throttle Control)
17601 – TCFI5 Sportster Version with Wideband Sensors — Race ECU 2014-2022 Sportster Evo w/o ETC and Can Bus.
17602 – TCFI5 3 Bar Speed-Density Version — Race ECU 2011-2017 Twin Cam Dyna/Softail with Dual 18 pin Delphi – For high boost turbo or supercharged applications
17603 – TCFI5 Open Loop Version – Open Loop – No Widebands – Race ECU 2011-2017 Twin Cam Dyna/Softail with Dual 18 pin Delphi® and Can Bus without ETC (w/o Electronic Throttle Control)
17404 – TCFI5 Sportster Open Loop Version – Open Loop – No Widebands – Race ECU 2014-2022 Sportster Evo w/o ETC and Can Bus
17408 – WEGO ADD ON KIT – Converts Open Loop Version of the TCFI5 to Closed Loop Wideband Control, includes WEGO IIID, Two Wideband Sensor and O2 bungs.

Downloads & Documentation

TCFI5 Installation

Wide-Band Oxygen Sensor on Front Pipe

Wide-Band Oxygen Sensor on Rear Pipe

Sample 3D Ignition Advance Table

Sample 3D Air/Fuel Ratio Table

Sample 2D Idle Speed Table

Real Time Engine Data Display

Data Logging Chart Display

Additional information

Weight	7.00 lbs
Dimensions	6.00 × 8.00 × 15.00 in
Choose Version	17600 – TCFI5 RACE ECU – NA 2011-2017 Twin-Cam Dyna/Softail wo/ETC w/CAN bus, 17601 – TCIF5 RACE ECU – NA 2014-2022 EVO Sportster® wo/ETC w/CAN bus, 17602 – TCFI5 RACE ECU – 3 Bar Forced Induction 2011-2017 Twin-Cam Dyna/Softail, 17603 – TCFI5 RACE ECU – NA Open Loop wo/Widebands – 2011-2017 Twin Cam Dyna/Softail, 17604 – TCFI5 RACE ECU – NA Open Loop wo/Widebands – 2014-2022 EVO Sportster, 17408 – ADD ON WEGO Module – Add on Closed Loop for TCFI5

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