Thanks Heinz. I will look at where the sensor is in a typical ford car. I also wonder if it would be possible to put an obstacle in the tube near the filter which would cause the air to "rifle" through the rest of the pipe which might increase flow....or am I going mad now?
Nick
Nick, the sensor is on different places depending on which model uses the same 1.6 ti vvc engine. I.e. the filterbox of the 4/4 seems to be a Fiesta item, but in a Fiesta the filter box which contains the maf sensor in this case, is much closer to the TB.
BTW I use a genuine Ford Focus 3 1.6 Ti VVC maf sensor plastic tube. This tube is shaped in a so sophisticated way at the inlet side that it makes no sense in my view just to take any flat tube and put the sensor simply in. Out of curiosity I dismounted the additional "clarinet" piece inside the Focus item which is just clamped. Without this flow leading - and slightly air compressing piece- the car drives almost horrible and the engine sounds rough.
Regarding the obstacle, I'm not sure if it would irritate or reduce the flow more than it helps. If I understand you right you think perhaps it could speed up the air? Give it a try.
If you could get a spare standard 4/4 tube from anyone who has changed his intake system you could give your thoughts also a try and replace a piece of the tube where it is straight with a Ford maf sensor tube.
