Catch Can?

[Evans SRT10]

Ok silly ?...... I see alot of guys on here use catch cans. What is the purpose? I dont have one and really dont see where I would need one. Just curious?

 

[yellowfever#154]

Keeps oil vapors and condensation from being redirected back into the intake manifold.

 

[Midnight Runner]

Keeps oil vapors and condensation from being redirected back into the intake manifold.

:dito::dito:

 

[JTS VENOM PERFORMANCE]

basically more bling than anything on an oem application

 

[Yellow venom]

Keeps oil vapors and condensation from being redirected back into the intake manifold.

Which helps to cut back on detonation also.