And what else should I do?
I`ve checked FAQS archives etc ut the more I read the more confused I got.
What I`ve done..
Removed hot air supply tube from manifold to airbox.
Attached to port of airbox length of 64 ml heat resistant flexible hose.
Because of lack of room below airbox and impedence caused by assorted hoses hydraulic lines etc have run hose up around rh intercooler pipe, over the top of the motor in front of the oil filler, behind alternator, around other intercooler pipe, over battery and into space in front of it.
I know it sounds complex but cable tied into place doesn`t rub interfere or otherwise get in the way of anything.
In due course will cut hole in bottom of battery shelf and run hose out into the fresh air behind the bumper.
Sound good so far?? It does work judging from the amount of suction it generates with motor running.

Cheers Mike
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1989 744ti, turbo plus, turbo timer, exhaust mods