no visual test on OBDII engines 96+ can be mean to the environment.

 

I've ran it on my car forever (been meaning to get a catch can; Cusco, GReddy, SRR) and it's never 'hurt' my engine.

 

I bet your crankcase is nice and filthy.

 

hmmm, maybe. She still roars like a tiger though.

 

no it doesnt hurt your engine.. imo it helps your intake cycle.. i have a breather on the intake side of it that gets fresh air instead of the bad stuff...

 

on nitrous i was actualy pulling oil through the stock hose so for me it was nothing to do with looks... i just didn't want to suck oil out of the motor, and into the intake..

 

Well I have one on my car too. I guess i have it for two reasons for having it. One because i went turbo and the second because it does look nice.

 

That is the whole point of the hose.

 

i thought it was to suck out fumes not oil??

 

The hose is there to reburn crankcase gases in order to lower emissions. I saw a post on SH about this topic, and there's an explanation about how it interupts the whole intake system, and can reduce engine life. Pretty detailed but I started falling asleep reading it so I can't give a short, cliff note explanation. If you want the entire thing do a search on SH, or PM blackduececoupe on SH, and he'll tell you his version.