ok found it, when i was at the drive through yesterday it was pretty noticable, so last night i went under to take a look, and i tried to follow the noise. I ended up feeling air(exhaust) coming out right where the pipe connects with the front end of the catalytic converter. That sucks for me. The whole system looks pretty bad from the cat to the back. I think i will try some of that exhaust cement in combination with some exhaust tape that they sell, in order to buy myself some time. Hopefully till at least after xmas!

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1988 190e 2.3 with 91 engine