BOV placement theory - your opinions?

[tiwing]

As far as i know, there are 2 schools of thought on where to properly place a BOV or recirculating valve.

1) is within 14" from the throttle body. The reason for this is to allow the reverse pressure wave coming from the TB to be released sooner, and allow air that is still being pushed by the turbo a place to escape.

2) is that it should be placed on the pipe immediately after the turbo, in order to best release turbo compressor surge that would result from the throttle body being closed.

In the case of a plumb-back, the return line should always go into the pipe before the turbo.

The MSP uses approach #2. I've converted my MSP to #1, with no ill effects. My GTX uses approach #1 stock. I have an option to do it either way on my GTX. Which approach do you believe is best.

 

[tiwing]

I can't believe no one on this entire forum has an opinion!!

 

[forgotmypsswrd]

Hmmmmmmmmm Honestly, which would be more efficient?

Now, I would think that being close to the TB would reduce the Turkey (Pigeon).
I odnt see how it being right after the Turbo that it would get rid of it seing as its close !!! Now I dont know how BOV works as in weaker or strong release if you know what I mean.

I would say closeest to the TB would be better! and Sound alot louder too!!!

 

[the vw guy]

closest to the tb, for sure. the msp runs the #2 approach, and it tends to compressor surge like hell. you want the air to be released as soon as possible, and with the bov close to the turbo, the air has to make it's way down the pipe to escape through the bov. if the bov cannot either vent air fast enough, or is too slow to react, there will be compressor surge.