ive got a 91 8v. it's my first gti so i wasn't sure how well it should go and was playing with it earlier saw that something looked missing on the part that the throttle cable goes round on top of the inlet manifold. i moved the other part (that wasn't hooked up) and saw it touches a solenoid that must be something to do with the maf sensor? so not being a bodger at all i just tied the two parts together with a cable tie

now i can hear the solenoid working and more air being sucked in. now it seems to go better but i just dunno what it does?