If you have a turbocharged car such as a 2003-2005 Dodge SRT-4, 2008-2009 Dodge Caliber SRT-4 or a 2008-2010 Cobalt SS Turbo this in important info.
Because of oil leaking past the PCV valves in our motors, oil naturally leaks into the intake manifolds, and collects inside the intercooler, uppipes, etc.
What happens then, is the incoming air into the motor is contaminated with the oil.
So, how to stop this from happening? You need a catch can to trap the oil as it flows through the vacuum lines.
More details here:
http://www.modernperformance.com/catch-0305-srt4-p-2061.html
A customer of ours received a MPx catch can for his 2003-2005 Dodge SRT-4 and posted a review on SRTforums.com here:
http://www.srtforums.com/forums/f77/new-mpx-catch-can-review-565803/#post8422875