How can I make the blow off valve (bypass valve) to make noise. I had a dsm a while back and i remember drilling a small hole in the side of it. I have no idea what to do with the audi one 99 a4 1.8T quattro triptronic. Thanks.

 

This is a pretty badass writeup check it out.
https://www.audiforums.com/m_246485/tm.htm

 

ur turbo prob isnt big enough for that fast and furious noise. i have an after market blow off and it hardly makes n e noise.

 

7-10 psi wont make **** for noise you going to need an intake and bailey dv and about 15+ psi boost to make a noise.

 

Read this:

https://www.audiforums.com/m_14128/tm.htm