By expelling the charge air to atmosphere rather than recirculating it, you do not increase the intake air temperature but you do allow the turbo to keep spinning! Not only does it sound cool, it also helps keep your IATs cooler!
![[IMG]](http://shop.500madness.com/image/cache/data/Forge%20Motorsport/fiat-500-abarth-500t-500l-blow-off-adaptor-plate-by-forge-motorsport-750x563.jpg)