Editing Engine Control Unit (section)

== ECU mapping ==

If you make substantial changes to your car setup or simply want to ensure that the ECU is correctly configured to control the fuel system, then you could consider a "mapping" session on a rolling road.  

ECUs generally work by comparing the engine speed in rpm to the position of the throttle. The ECU then compares these values on a "map" to find the correct amount of fuel to add. This ensures that an engine is not running too rich or too lean, both of which can be undesirable with the latter leading to detonation.

The mapping process will involve your car being run on a rolling road for a period of time, with an operator changing the map on the fly. The rolling road will then allow the operator to add the optimum values to the map.


{| border="1"
!Name & Website !! Address & Google map reference
|-
| [http://www.sinclairemotorsport.com Sinclaire Motorsport]
| Sinclaire House, Bryant Avenue, Romford [http://maps.google.co.uk/maps?hl=en&q=RM3+0AP RM3 0AP]
|-
|}


{| border="1"
!Name & Website !! Address & Google map reference
|-
| [http://www.jkm.org.uk/performance/index.htm JKM Performance]
| Bolde Close, Copnor, Portsmouth, Hampshire, [http://maps.google.co.uk/?hl=en&q=PO3+5RD(JKM+Performance) PO3 5RD]
|-
|}


{| border="1"
!Name & Website !! Address & Google map reference
|-
| [http://www.hangar111.com Hangar 111 Lotus Performance]
| Unit8b Seven Acres Business Park, Waldringfield, Suffolk [http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Hangar+111&sll=52.058349,1.300786&sspn=0.006306,0.019226&g=IP12+4PS&ie=UTF8&ll=52.058982,1.300786&spn=0.006306,0.019226&z=16&iwloc=A IP12 4UH]
|-
|}