RPM - Engine RPMs

Home
Definitions
ML1.1 and M1.1? The same? Wrong!!!
Hex Numbers
AFM ML1-Flow Meter Table
AFM ML1- Specification Early Porsche 944
AFM ML3-Transfer Function Standized 1984
AFM Refurbishing-How to....
Checksum Correction-Part 1
Checksum Correction-Part 2
DME - ML1.2 Photos
DME - ML3.1 Photos
DME - Four DMEs in One... ML3.1 Map Sets
DME - Rigged for Prototyping
DME - Finding ECU Numbers
DME - Firmware Numbers
FQS - Fuel Quality Switch
Ignition Advance
Lambda Inside
Maps - 2D Formatted Maps ML3.1 & Later
Maps - 3D Formatted Maps ML3.1 & Later
Maps - Map Address Table
Maps - MapFinder
ML1.2 Memory-Porsche 944
ML3.1 Memory-Porsche 944
ML3.1 Memory-Porsche 911
Rev Limiter- Types 1 & 3
Rev Limiter- Type 2
RPM - Engine RPMs
email us

 

Engine RPM
Engine RPMs are in increments of 40rpm. 

Hex numbers (8-bit) range from 00h to FFh.  The decimal equivalent is 0 to 255.  The Motronic ECU was designed to operate over a range of 0 rpm to 10,200 rpm.  To be able to express 10,200 with a single Hex numbers ( 8-bit), each hex digit is given a weight of 40rpm. 

Maximum RPM = 10,200rpm

Value of each digit = 40rpm

 

 

 

 

 

 

 

 

 


  Sponsored by