I have just recently purchased a new optifuel system and was wondering if anyone has fitted this system to their aeries? The question I have is this, I am running a Rotax 503 with dual carbs, the sender unit can be placed between the fuel pump and the carb and I can set the sender to half flow. Or I can install it between the filter and fuel pump, to measure the flow rate before the fuel gets to the fuel pump.
The question is this, which installation would be better?

Regards
Gary