Appreciate your feedback Goran.
I just bought of some Vulcanating tape and put more then enough for it to not be sucking air there any more.
Only change is that the g/s is now even lower. showing average 0,30-0,36 on idle and barely increasing at WOT. So not an improvement in any way.
Seems like the MAF has to be the guilty party this time.
according to BOSCH, this is the one i need. and of course this is the only one mye usual websites does not have (Rexbo/Mister Auto)
The MAF