Which Blowoff/Bypass Valve do you use?
 

I haven't seen a discussion anywhere about which BOVs people are using. I'd be interested to hear what the favourite options are and maybe some constructive discussion as to why one is prefered over another.

I'm thinking of the AVO kit and for now I think I may just go with a plastic Bosch.

Well there are a lot of choose you can use. we use the Turbosmart Universal dual port BOV its pricy but we get 4 choose on how to set it you. also the GFB works great with the AVO kits. feel free to PM me if you have more questions.

I ran a Tial Q on my last STI and could never get it to perform consistently. On this BRZ build I have now switched to a TurboSmart VeePort Pro, haven't yet to run it but very impressed with it so far.

Short of how it looks, if you haven't run it, how can you be impressed?

If you're going to run the AVO kit, I would suggest just getting the AVO BOV. You can get an OEM style 100% recirc or an adjustable one that will allow you to go 50/50 recirc.

I should also mention that going with the AVO setup on an AVO Turbo kit will mean you don't have to get any custom flanges welded on to the charge pipe.

Physical build quality and construction. Good instructions, things like that. I also had a hard time mounting the Tial because it was so large, the Vee Port is much smaller so thats much more freedom in terms of where to mount it.

That for sure is the most fool-proof route but I'm not entirely sure what makes it worth the cost as compared to a less expensive alternative.

It would be great if everyone could state what they have and why they chose it for future searchers. There are a lot of turbos on the forum.

Turbosmart is where it's at. I've owned many a BOV and it's by far the best I've owned. Sounds awesome, it's nice and small so it'll fit just about anywhere, v-band connections, very high quality machine work and the customer service is insane.

I had an issue where they didn't list a spring stiff enough for the vacuum my engine pulls. I called Turbosmart and they had one overnighted to me for free the next day. I didn't even have to ask. I was calling to see if I could buy one and they were just like "oh no, it's on us, and it'll be there tomorrow morning". Best customer service experience I've had on a car part, ever.

Im running the tial q on the fa20club 60trim kit it wouldn't open until I installed a vibrant vacuum line block now it works fine I tried to change springs but they were to soft so the valve would leak

We have always had great results with Turbosmart products. We are using either the Veeport or Raceport BOV, and Comp Gate 40 waste gate on our kits. Their quality is top notch for sure.

I had similar issues. I ended up with an 11 psi spring and a couple aluminum washers to keep it closed at idle. I believe they now make a 12 psi spring for the Q as well.

I think I've settled on this GFB Respons TMS BOV. It has the capability to go from full recirc to full blow off with anything inbetween by adjusting a collar on the body.

I don't know anything about the company but those Australians seem to make good products. Any opinions?

Here's a video about it.
[ame="http://www.youtube.com/watch?v=ECkvx-YWgQI"]GFB Respons Blow-off valve - YouTube[/ame]

The important thing is just that if you have a draw through maf you use a recirc, and if it's blow through use whatever you want. Other than that it's pretty much personal preference. I'll always use turbosmart from now on though.