I think I followed that exchange - so basically the warm air is for quicker warm up at start. OK. But for efficiency cooller air is better. Does that fact I hardly use full throttle affect this at all ? I give it a blast every now and again to shift any crud but usually its light throttle except for close to peak BSFC (around 1800 I think).
So if I need to go for cooller air but still have perhaps a grillblock for aero I need to find a shape which allows air to flow in but doesn't create too much disturbance to the (hopefully) better flowing air over the grill. The air intake is just behind the grill on the left hand side (from the driving seat). My thought is to upgrade the intake to the PD160 version which is larger :
and then experiment with the best intake opening - perhaps a large hold or better maybe a smaller set of holes of slots cut vertically.
The grill comes apart easily
and mine is quite 'scabby' so I don't mind experimenting with blocking it.
My car has an intercooller but its located inside the front, right (from the seat) wheelarch with air flowing through an opening in the bumper there around a foglight and then exiting through a small grill in the arch itself. There are FMC kits but they are spendy, too spendy for me.
All of this may seem like cunning design but its a car the size of a Polo with the wacking great 1.9 TDi in it. And yes it does feel very nose heavy
