Get XiED(tm)! Performance Parts

Don't let the Harley heat monster ruin your riding.
Reduce  Engine Surging
Improve Throttle Response
Reduce Engine Ping


HD 2007/2008 Engines

High Heat on 2007/08 HD engines

HD 2007/08 Performance Recommendations

Cool your exhaust temperature with the Wide Band O2 upgrade for 2007/08 HD

Harley Camshaft Specification Tables

HD Twin Cam Engine Builds
TC 128 HP 95 CID
TC 100HP Street Engine

The basics of Fuel Injection explained

Rammer Performance Air Cleaners
TC Performance Heads 100+HP

Pro Tuning on a Shade Tree Budget


Dyna 2000
Screamin Eagle Selectable Curve
Switch Settings

Technical information on the Dyna 2000 and Screamin Eagle Selectable Curve ignition modules.

Switch Settings

Switch 1   V.O.E.S Description
off   Normal In this mode when high manifold vacuum is sensed, full ignition advance is achieved by 1500 RPM. This is the normal mode.
on   Retard This mode is for special applications like Nitrous Oxide. The VOES wire is used to retard timing.
Switch 2 Switch 3 Advance Curve  
off off Curve 1 Total Advance 35 degrees at 3000 RPMs. This is normal setting.
on off Curve 2 Total Advance 35 degrees at 5000 RPMs.
off on Curve 3 Total Advance 32 degrees at 5000 RPMs.
on on Curve 4 Total Advance 30 degrees at 5000 RPMs.
Switch 4 Switch 5 RPM Limit  
off off 6000 Stock motors.
Motorcycle Performance Guide recommend bikes with stock valve springs be set here.
on off 6500 modified street motor
off on 7000 race motor only
on on 7500 race motor only
Switch 6   Firing Mode  
off   Dual fire  
on   Single fire  

Setting the timing

If the motor was properly timed before installation of the module, the timing should be correct after the new module is installed.

Setting static timing is easy. Remove the timing inspection plug above the primary drive housing on the left side of the engine. Removing the spark plugs makes it easier to turn the crankshaft. Put the bike in high gear and rotate the wheel to get the crankshaft to TDC ( top dead center ) on the compression stroke of the front cylinder. The TDC timing mark should be properly aligned in the inspection hole.

Rotate the pickup base plate to cause the LED to turn on and off. Carefully find the point where the LED just turns off while rotating the base plate in a clockwise direction. Lock the base plate in position. Confirm the crankshaft is still at TDC. The timing should be correct.


Table of Contents
Search the site 
Nightrider COPYRIGHT

Ask us a Question

Modification, Installation, Maintenance and Tuning Index  will help you find most of the information you want on one page.

How to get Professional Tuning Results at home
Testing the Innovate Motorsport LM-1 portable air fuel meter

Profession Tuning on a Shade Tree Budget

Veypor VR2 Data Logger and Instrument Panel
Video Installation and Demo
Purchase VR2

Engine Performance
How to Build a
TC96 2007 Engines
TC88 70HP Stage1  
TC95 128HP Stage 3
TC95 100HP Street
TC96 2007 Stage 1/2
EVO 64 HP Stage 1
EVO 74 HP Stage 2
EVO 82 HP Stage 3
EVO 95 HP Stage 3
883 to 1200 Upgrade
Shovelhead Modifications

New EFI for EVO and TC

Performance Gallery
Horsepower Gallery
Evolution 80
Twin Cam 88/95
Evolution Unlimited
Sportster Unlimited
Drag Strip Gallery
Land Speed Racing Gallery
CV Carburetor
Modifying the CV carb
Tuning a CV carb
Selecting a cam
Install a TC 88/95 cam
Install a Big Twin cam
Install Sportster cams

Camshaft Specifications
Twin Cam

Exhaust Systems
EVO Exhaust Testing
TC Exhaust Testing
Khrome Werks AR100 test
Making Drag Pipes Work

Shop Manual
Carburetor Troubleshooting
Finding Manifold Leaks
Cylinder Heads
Pistons and Cylinders
Belt Drive
Shop Manual Appendix
$20 Bike Lift
Plug Wires
Spark Plugs
Engine Tuning
Nitrous Oxide
Motor Oil
Stutter Box
General Information
WEB Links
Buy Books and Manuals
Performance Calculations
Estimate Horsepower
Estimate 1/4 Mile Time
Estimate Top Speed

Engine Displacement
Exhaust Length
Gear Ratios
Air Density

The Nightrider Diaries
The ramblings of a genius a, a madman and something in between.

Where is Sifton Cams?

Autocom Active-7 tested

Harley-Davidson EFI
-EFI basics explained
-EFI modifications explained

183 HP, 2 carbs, 2680cc

Copyright 1997-2006  Stephen Mullen, Oldsmar, FL -+-