Engine mount, and rubberseal, and a little bell?

[Otto]

Well guys, i think i have found the tweeking bird!. I took of the airfilterbox (it was kind of loose) i then fired up the lady...wraaauummm, what a great sound from the venturis...! It is definently a ventury tweek i can hear. Maybe the sound have allways been there? it kind of whistle in a high pitch, while i get the deep rooar as well. The venturis are not loose, so its not caused by them rattling. I then put in some doorrubberseal against the two parts of the airfilterbox, and now its firm and tight. The sound is lower now, and i kind of like it. So this is the way i go from now.
In the testings, i had my head down the enginebay, but i can not sniff any exhaustfumes... I am back at the trunk theory. It has got better with the new rubberseal, but not perfect. HMM I will try to seal some more, between the boot and the cabine.
Thanks for input...keep'm comming.
Otto