Perfect Power Online Manuals.


Support for your FT20 Unit.


Some manufacturers operate 2 injectors at a time. In most cases, one stock ECU injector output serves two injectors. One injector sprays into the closed valves, the other into the open valves. This is quite acceptable in some countries. However, it also means that the injector activation happens EVERY crank turn, and not every TWO crank turns.


The Fuel Tuner can be made aware of this by setting in the LetRipp Windows Tuning Software :

CONFIG, SYSTEM DEF, Batch Injection

Batch injection is indicated if the RPM shows double the normal or expected value. Click the option "ON" and the RPM will be indicated correctly! If the stock ECU uses batch injection, then the INJECTOR TRIM entries should best be left at zero.