How did he do this??!?? To the Stillen SC??!!
 

Hey guys please check this video out and skip to 1:12+

This stillen SC kit has a HKS Blowoff valve right on the side, how?? Bypass delete or what?

https://www.youtube.com/watch?v=BpvozJjwmBs

Because, cartoon noises only.

Yeah he moved it further up, and?

No, it still has to have the bosch valve. It is there in addition for the sound. Probably causes a terrible hiccup and stutter in the throttle decell.

Not seeing how it would do anything to drivability, providing it has the correct spring and tapped into the same line as for the bypass valve. What's your theory?

Because it is dumping already metered air. His Mafs are pre blower and his valve is post. The air the car thinks its getting is not getting to his engine and instead dumping out of the hks. Therfore he is going to pop pig rich. Might make for a nice puff of smoke.

Ohhh, fair enough. While technically you're right, in my own experiences with two previous cars that dumped to air... aside from blowing a bit of extra unburnt fuel out the back during WOT shifts, it never affected driveability.

I thought you meant a specific issue would arrise to this specific setup.