| 
The knock sensor frequency, and thus, its operation, is affected by the bore of the cylinder. From what I can tell, each ECU's knock board is also dialed in to specific characteristics of the engine, to filter out engine noise from knock..
using a knock board with an engine other than it was designed for may not be very effective.. 
 |   
       
      
      
      
       Copyright © 2002-present by the contributing authors. All material on this collaboration platform is the property of the  contributing authors, and is covered by the Non-Commercial Share-Alike License unless explicitly stated otherwise. | 
          
       
         
    |