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What Do I Do if the Starting, Idle or Warm-up Performance Needs Adjustment? ....................31
Advanced Tuning and Data Items on Closed-Course Track ........................................................32
Overview - Tuning With Data Items and Advanced Tuning ......................................................32
Where do I start?......................................................................................................................32
Inspect and Prepare Bike for Testing .......................................................................................33
Test Bike to Determine if There Is a Need for a Tuning Adjustment ........................................34
If Undesirable Symptoms Were Noted, Record ECM Engine Data Using Data Items ..........35
Why Would I Want to Adjust the AFR?.....................................................................................35
Using Knock Retard as an Indicator of Lean AFR....................................................................35
How Would I Adjust the AFR with Advanced Tuning?..............................................................36
Why Would I Want to Adjust the Spark Timing?.......................................................................37
How Would I Adjust Spark Timing with Advanced Tuning?......................................................37
Advanced Tuning, Chassis Dynamometer and AFR Meter..........................................................38
Overview - Tuning With a Chassis Dyno, AFR Meter and Advanced Tuning ...........................38
Where do I start?......................................................................................................................39
Inspect and Prepare Bike for Testing .......................................................................................39
Dyno-Test Bike to Determine if There is a Need for a Tuning Adjustment ...............................40
Why Would I Want to Adjust the AFR?.....................................................................................41
How Would I Adjust AFR with Advanced Tuning, Dyno and AFR Meter? ................................41
Why Would I Want to Adjust the Spark Timing?.......................................................................43
How Would I Adjust Spark Timing with Advanced Tuning?......................................................43
Miscellaneous Tuning ..................................................................................................................44
Cranking Fuel .......................................................................................................................44
Warmup Enrichment .............................................................................................................44
Idle RPM...............................................................................................................................44
IAC Warmup Steps ...............................................................................................................45
Acceleration Enrichment.......................................................................................................45
Deceleration Enleanment .....................................................................................................46
Section 8 – Frequently Asked Questions (FAQs) .......................................................................47
Section 9 – Calibration Information .............................................................................................49
Key to Calibration Table .......................................................................................................49
List of Screamin’ Eagle Accessories by Calibration .................................................................54
Section 10 – Glossary ...................................................................................................................65
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