TC88 Plug-In Ignition Module for 1999-2003 Carbureted Twin-Cam 88 Engines

Wide timing advance adjustment range accommodates stock to highly modified engines

Digitally set RPM limit (100 RPM steps)

Selectable multi-spark mode for quick starting and smooth cruise

Coil outputs protected against short circuits

Optional USB interface and software for programming custom advance curve

Billet aluminum housing with black anodized finish

Easy plug-in installation

Supports all sensors including theft/security module

Visit our Tech FAQ for more detailed information about using our ignition systems in performance applications!



New USB Interface

Part Number 18014

Interfaces all Daytona Twin Tec engine controls (ignition and fuel injection systems) to USB port on laptop PC

Includes all required adapters for Models 1005-1007, TC88, and TC88A ignitions, and TCFI/VRFI fuel injection systems


High Output Coil for Twin- Cam 88

Part Number 2008

Fits most 1999 and later carbureted models - same size as stock coil P/N 31655-99 (will not fit in place of P/N 31639-99) 

Greater than 50 mJ and 40,000V output for demanding performance applications

Compare to Screamin' Eagle coil P/N 31704-99 - same size and electrical specs at a substantially lower price!


Universal Spark Plug Wire Set

Part Number 3002

Universal set for all Twin-Cam 88  applications with 90 spark plug boots and straight coil boots 

7.0 mm black silicone insulation with ultra low resistance 500 ohm/ft spiral core correctly fits special Twin-Cam 88 coil terminals (most competitors force fit incorrect 8.0 mm wire - we use the right wire size) 


Order online using Paypal or call us at 386-304-0700  (Monday-Friday 9 AM to 5 PM Eastern time) for credit card and COD orders. For online orders, please email any special instructions to 


All products covered by our 1 year limited warranty.


Part Number

Description Suggested Retail
1008-EX TC88 EX Plug-in Ignition  (with ARB E.O. No. D-641-1 for 1999-2003 carbureted Twin-Cam 88) $341.00

1008 TC88 Race Plug-in Ignition  (for 1999-2003 carbureted Twin-Cam 88). Not legal for sale or use in California or on any pollution controlled vehicles. $341.00

1008-T TC88T Plug-in Ignition  (for 1999-2003 carbureted Twin-Cam 88. Special version with stage RPM limiter for drag racing. Note: requires USB-INTF for programming). Not legal for sale or use in California or on any pollution controlled vehicles. $341.00

18014 USB Interface (provides USB connectivity for all Twin Tec engine controls. Includes 6 foot USB cable and Windows XP/Vista/7/8/10 drivers on CDROM). Not legal for sale or use in California or on any pollution controlled vehicles. $94.00


18005 TC88 Power Adapter (12 volt power supply for bench top programming. 110-240 VAC multi-plug international compatibility) $114.00

2008 High Output Coil  (for most 1999 and later carbureted Twin-Cam 88 applications) $107.00

3002 Universal Spark Plug Wire Set  (7.0 mm black silicone with 500 ohm/ft spiral core. For Twin-Cam 88 applications with 90 spark plug boots and straight coil boots) $24.00


Super Deal!

TC88 EX Ignition Kit (includes TC88 EX ignition, P/N 2008 coil, and P/N 3002 wire set. With ARB E.O. No. D-641-1 for 1999-2003 carbureted Twin-Cam 88) $452.00


The TC88 provides coverage for all 1999-2003 carbureted Twin Cam 88 engines. The 50 states street legal TC88 EX version features advance curves suitable for all street applications including high compression engines. The TC88 Race version includes race advance curves with a slightly wider adjustment range. The TC88 is constructed with a low profile machined billet aluminum housing. The TC88 offers easy plug-in installation and all the switches are accessible from the top - a significant advantage for most installations.

Five rotary switches are used to set the operating modes, adjust the initial timing and timing advance, and select the RPM limit. Since the new Twin Cam 88 engine uses a non-adjustable crankshaft position sensor, mechanical timing adjustments are no longer possible. The TC88 solves this problem with a switch for setting the initial timing. A second switch sets the slope of the advance curve. The combination of these two switches allows the user to optimize the timing advance for a wide range of applications - from stock to highly modified engines. For details, including advance curves, you can download the installation instructions from our website.

H-D motorcycles with the Twin Cam 88 engine have a check engine warning LED on the instrument cluster. The TC88 communicates basic diagnostic information by blinking codes on the check engine LED. This eliminates the need for an expensive scan tool. Typical diagnostic codes include failed sensors or low/high battery voltage.

An optional USB interface and Windows compatible software allow the use of a laptop PC to program a custom advance curve for precise dyno tuning and access additional features such as rear cylinder timing offset. The USB interface plugs into the existing H-D diagnostic connector on the motorcycle wiring harness. The USB interface is sold separately, but Windows compatible software is available for download. The software will operate in demo mode without an ignition attached. 

TC88T - Special Race Version with Stage RPM Limiter for Drag Racing

The TC88T is a special race version with a stage RPM limiter suitable for drag racing. The input at pin 10 of the black connector normally connected to the bank angle sensor or TSM/TSSM module is used instead to select between the stage and maximum RPM limit. The stage RPM limit is set by means of the two rotary switches on the module. The maximum RPM limit is programmed by means of the optional USB interface and PC Link software. When the input on pin 10 is grounded by means of a switch, the stage RPM limit is selected, otherwise the maximum RPM limit is selected. For more details please read the TC88 Stage Limit Tech Note.