couple of pictures I took of a mod I did to the intake elbow on my S4 (just found these recently)
http://i75.photobucket.com/albums/i293/beemercer/c030c673bca47d2492d09b0c547a4728_zpsa75224b8.jpg
http://i75.photobucket.com/albums/i293/beemercer/1899e2a449ad83c1a5b8771e861c4e64_zps25197239.jpg
http://i75.photobucket.com/albums/i293/beemercer/ab242a093cf73794954ab66709b3fbe8_zps5003c346.jpg
http://i75.photobucket.com/albums/i293/beemercer/2bb63f6ad0122f4532bfdcdef53bb2f2_zps9853b6b7.jpg
http://i75.photobucket.com/albums/i293/beemercer/195569c5716a5e3654694ed64f62dbec_zps332e9dcc.jpg
basically just smoothed out the elbow a bit, who knows how much it helped but the car always logged very well