Got a bit nuts with the painting and cleaning i think Resprayed the inlet and i allmost forget the plate between the inlet and the TB. Very dirty plate But the oven cleaner was no more there as i used it all yesterday So look for more cleaning stuff in the kitchen. And found cillit bang

Click link http://www.cillitbang.co.uk/sf2_all.shtml#1 The site says i can;t use it on alu. Fock them. Works just fine

Here some pics:
before:

And after a bit of cleaning with Cillit


it works better then the oven cleaner
And all back together.