Have ya seen Perrin's new AOS?! I'm reading up and trying to compare the variance/diff between Crawford's. Wanted to see what other's thought about it. Both are great companies however Crawford has been offering their AOS forevs.

Only slight difference I noticed is that the Perrin does require occasional cleaning while the Crawford seems to require no maintenance?

I had been planning to order the Crawford one, but with Perrin's new product I'm starting my research all over again. Seems I can't go wrong with either? I'd be throwing this on my 2011 WRX which I use as a DD with a few (2-3) Auto-X, track days a year). Light mods, mostly suspension but include Cobb intake, Cobb reflash and turbo-back.

Thoughts/ Opinions!

 

Have you thought about the cusco aos?

 

You mean paired with an AOS? Isn't the Cusco a catch can?

 

I'd go Perrin!

 

I hear Grimmspeed's AOS is super nice, too.

 

but it just throws frothy oil back into your pan. I don't like that idea. If it's going to blow off it shouldn't go back into the system.

 

The one reason I didnt buy it... Although I have been reading about doing an AOS combined with a catch can which yields some nice results. But not many people do that and the people who do actually do that are heavily modified ( at least to my research)..

To the OP, If I were you I would wait to see some feedback from others first but if you really want to jump the gun and purchase it please leave some feedback. I'll do some more research about this one and see how it compares to the GS or other competitors.

 

What about the aos that speed element sells? I forgot the name of it though.

 

Isnt that pretty much exactly the same thing as the GS one at half the price?

Also its this one:
S2 AOS
I am still deciding on what I want... But i have read that the s2 does do a good job. I personally dont want all the blowby and what not going right back into my oil pan.. that just isnt logical (to me at least).

After researching about the Perrin AOS.. This thing seems bad ***! I might want to pick this up I just hope they do revisions to it like other AOS's but of course we can never expect anything to be perfect.

 

WAY better design if you ask me
http://www.speedelement.com/index.ph...emart&Itemid=1

I've been running one of these for over a year with no maintenance at all

 

GS / S2 / Prova AOS design doesn't work on track or high boost/HP cars. Any long and high G enough sweepers that oil rides the walls and comes out the breathers, it overpowers the oil cap AOSs. High HP cars also overrun the design.

It's a good design if you aren't serious, but the Crawford (and apparently Perrin) designs are for the serious HP / high G cars. Google GS AOS problems and you'll find a few threads discussing the limitations, some with input from GS themselves.

The GS style AOS and the Crawford style AOS are different products for different audiences, they shouldn't really be cross shopped. Daily drivers have no need for anything as serious as the Crawford / Perrin style and anyone seeing serious power or long high G sweepers probably already knows that the GS style won't work for them.

 

Still digging around but leaning toward either this Perrin AOS or the Crawford.
Found this nice comparison of GS vs the Crawford.

^Exactly this. I'm sure for my car I can get away with the GS; but I'm leaning to tracking the car more so figured I'd invest and do it right the first time.

 

Crawford v2 is a far SUPERIOR design. Research it doesn't listen to these clowns. The grimmspeed unit screams "I MADE THIS AT HOME DEPOT", and normally I'm a big grimmspeed guy. Talk to some more people who actually track their car, they'll likely recommend the crawford.

 

Sounds like a perfect low stress duty to me

 

AOS and catch can will do just fine. If you got the dough go for it.