think the bit at the rear your on about is hot air hose..goes round towards manifold..helps on cold mornings for starting..but dont worry if its missing ,,,had few mk2's without them..and no probs...
the bit on side of ur airbox thats coverd will clip off...and if you take off plastic cover on inner wing will help slightly with air-intake..give bit of rhoar when you put foot down you can also drill the same side of that box if you like to help as well..but only drill on wing side and bottom halpf of air box...
the front of ur air box should have a cover that clips over headlight and as you look into engine and down at it on your right hand side there is a kind tube that is part of air box that clicks into the cover over head light as your main air-flow comes through front head-light...hope that helps...sorry no pics...
on mpg in valver...when i had mine could get about 280-300 out of a full tank ...but could be low as 210 if driving like i stole it all the time...
got about 35mpg at 70mph...but again could be low as 18-20mpg on some days

...town driving was about 28mpg give or take a few....
fantastic cars when you drive them like they should be driven
