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Revolution Performance Precision™ EMS:
The industry’s first fully integrated dynamic tuning control unit.

Revolution Performance Precision EMS photo

Revolution Performance has created another revolutionary product for Harley-Davidson® Twin Cam® motorcycles—the Precision™ Engine Management System.

Now available for 2011 Touring Bikes!

It isn’t just another controller claiming to be self-tuning, or one that is cumbersome to install. This new EMS is a true self-optimizing system—adjusting almost instantly with little further adjustment. No resetting, no laptop, no dyno, just set it up once and ride! Other benefits include:

Very easy to install

Improved throttle response

Improved fuel economy

’08-up TBW fully supported

Takes full advantage of the factory ECU

Maintains all OEM safeguards and features

Self adjusts when you upgrade other parts on the engine

Read the full Precision story

Important Note to owners of bikes with factory security systems installing the RP Precision EMS

Read our Frequently Asked Questions.

Download EMS instruction sheets (PDF format):
NOTE: The 2004 models are covered by the 2005 instructions. The ECU on 2004 models will need to be replaced by a 2005-current ECU.

2005-2007 FL models

2008-2010 FL models
 

2005-2010 FXS (Softail) models
 

2005-2010 Dyna models

 

Precision™ Engine Management System
Fits: 2004-2006 Touring
(For 2004 models, upgrade to 2005-up ECU is required)
 
Precision: 604-006   Item: 1020-1370
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2007 Touring
 
Precision: 604-002  Item: 1020-1371
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2008 Touring
 
 Precision: 604-003   Item: 1020-1372
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2009 Touring
 
 Precision: 604-004   Item: 1020-1373
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2010 Touring
(For 2010-11 Touring models the 07-09 style O2 sensor bungs are required)
 
 Precision: 604-005   Item: 1020-1374
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2011 Touring
(For 2010-11 Touring models the 07-09 style O2 sensor bungs are required)
 
 Precision: 604-011   Item: 1020-1526
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2007-2010 Softail
 
Precision: 604-007   Item: 1020-1367
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2004-2006 Softail
(For 2004 models, upgrade to 2005-up ECU is required)
 
 Precision: 604-008   Item: 1020-1366
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2006-2010 Dyna
 
Precision: 604-009   Item: 1020-1369
MSRP: $799.95  Price: $759.95
Quantity
Precision™ Engine Management System
Fits: 2004-2005 Dyna
(For 2004 models, upgrade to 2005-up ECU is required)
 
Precision: 604-010   Item: 1020-1368
MSRP: $799.95  Price: $759.95
Quantity
'07-'09 Style 02 Sensor Bungs
 
Precision: 605-023   Item: 605-023
MSRP: $8.00
Quantity


 

 
       

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