Quote Originally Posted by UselessPickles View Post
Depends on your definition of "need".

I don't think any of the kits *need* a catch. The kits come tuned to account for the effective reduction in octane of the fuel due to oil vapors from the PCV system. Using catch cans removes oil from the air, which can allow for more aggressive tuning.

This is not unique to the Pentastar. All engines with PCV systems (essentially all modern engines) suck oil vapors from the crankcase into the intake. It's normal.
When I say "Need" its because I suspedt when JL opens their SC, there is going to be actual liquid oil inside. That MUST add to SC wear. Also someone posted the pic of the mustang's intercooler full of oil. That has to reduce its effectivness.

What happens if you put 100k on a blown engine sucking liquid oil thru the system?