OK, this has me baffled (no pun intended)
The wastegate on the turbo allows excess gases to bypass the exhaust turbine once a certain (user defined) pressure is reached. These gases are re-directed back into the car's exhaust system - correct?
A BOV serves no f*****g purpose apart from making a stupid noise every time you change gear - correct? (IMHO - not required on a properly set up system)
So, what the hell does a screamer pipe do that is any different to a wastegate or BOV? I am obviously missing something here.
Sounds to me just a very efficient way to get tugged
