Alain G wrote:Ben!
I have a big American tank (Dodge Charger 3,5 petrol liters) which according to the sales sheet consumes 8,3 liters 100 km for 90 km / hour according to the tests of Transport Canada, yet I do in real 7,5 l / 100km to 120 km / h calculated on the amount of fuel consumed from the tank!
How to reach this consumption ???
1) replace the original filter with 2 high performance conical filters and tubing of my "Y" design.
It's weird, if it's not a carburetor model, the ECU should compensate with its intake pressure sensor and / or air flow sensor and "correct" the richness. Indeed your "Y" must impoverish with less pressure drop on the incoming air.