Hi Alinux,
Unfortunately I have sold the car about 2 weeks ago, but I had a picture of the engine bay. I dont know what engine you have, but the one I had was the ADR 1.8 20v.
I have made up a pitcutre from what I could find... If you give me your email adderess I will email to you, cos it wont let me upload from my computer.
Basically the big air pipe that goes to the throttle body has a o-ring type seal on the insde edge of it, made of rubber, on the pitcure point number 2.
The air pipe including the seal would fit OVER the thrttle body (on the outside) on point number 1.
Now sometimes when you insert the pipe, and especially on the adr engine, cos there isnt much room, the seal may not go over the throttle body, and might bend and jam inside the airpipe. When it is fully tightened up of course, it wont go anywhere, but it could have an air leak, which causes all sorts of problems.
For the MAF, I would suggest doing some live readings, you can us VAG-COM for, and it will usually tell you the specified and actual MAF readings...
Dont forget that if you clean the throttle body, then you will have to reprogram the basic settings (setting 98).
Mike
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Miko84
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