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1008-T – TC88 Ignition – Race – Twin Cam – 1999-2003 – Two Step RPM Limiter


1999-2003 carbureted Twin-Cam 88 Ignition Module with Two Step RPM Limiter – Not legal for sale or use in California or on any pollution controlled vehicles


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

1008-T – TC88 Ignition – Race Ignition with Two Step – Twin Cam – 1999-2003

Direct fit for:

• All 1999-2003 Carbureted Twin Cam 88® Engines

• The EX version of this product (1008-EX) is emissions legal – the difference between the two products is that this version of the product has advance curves with a slightly larger adjustment range and it not been tested for emissions compliance.

• NOTE: 1998-2003 Sportster 883/1200 requires ignition module pn 1005S-EX. If you have a Sportster® 1200S with Dual Plug Heads, this bike requires our External Ignition version pn 1007-EX (not the 1005S). Please refer to our Dual Spark Plug Tech Note for more details.

• When performing a custom Twin Cam build or if your stock harness is bad – use our complete kit part number 30081 , which includes a replacement ignition wiring harness, module, coil, wires and USB.

• Drag Racing – If you are looking for the TWO STEP version of this product. Be sure to choose 1008-T in the option drop down. The two step version of this product adds a second RPM limit that is used to limit the engine RPM while staging the motorcycle — see the link to the two step note at the bottom of the page.

· Plug and Play for 1999-2003 Carb Twin Cam Engines

· Easy to access and adjust the five rotary config switches

· Supports all OE sensors, including the theft/security module

· 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 a custom advance curve

· Billet aluminum housing with black anodized finish

Twin Cam engine utilize a non-adjustable crankshaft position sensor, this means that mechanical timing adjustments are no longer possible. The 1008/TC88 allows you to adjust your initial timing +-4 degree using a rotary switch. A second switch sets the advance curve slope. 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, please download you can download the installation instructions from our website.

H-D® motorcycles with the Twin Cam engine have a check engine warning LED on the instrument cluster. The 1008 / TC88 Ignition Module 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 and/or low/high battery voltage.

You can adjust the slope and advance curve total using the switches on the unit or connect using our TC88 PC Link software and USB adapter pn 18014 to optimize and build your own timing advance for a wide range of applications – stock to highly modified engines. For details, including advance curves, download the installation instructions (below). Note: USB interface 18014 plugs into the existing H-D diagnostic connector on the OEM motorcycle wiring harness.

Building a 1999-2017 Twin Cam Engine for Racing?

We recommend that you utilize our 30081-T Complete TC88-T Racing Ignition and Harness Kit – Includes: 1008-T TC88 Race Ignition Module with Two Step, 2008 Coil, 3002 Wires and 1008-HH Wiring Harness. This kit has everything that you need to wire and fire your new Twin Cam race build. This kit includes the TC88-T version of the ignition module which does not have the ability to communicate with the 2004+ modules. Please refer to the 3008-T Complete TC88-T Racing Igniton Kit with Harness for details.

Quick Start Guide 1009 TC88A Download

Quick Start Guide 1008 TC88 Download

Full Instructions 1008 TC88 Download

TC88 PCLink Software Download

USB Driver Download

TC88 PC Link Instructions

Twin Cam – TC88 (1999-2003) Ignition FAQ

1008-T Two Step Stage Tech Note

Additional information

Weight 7.00 lbs
Dimensions 6.00 × 8.00 × 15.00 in
Choose Your Model

1008-T Race Ignition With Two Step RPM Limiter, 3008-T Kit – Includes 1008-T Race Ignition, 2008 Coil and 3002 wires


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