I can deal with some metal inserts, I just do NOT want the metal showing. All NASA piping LOL.

 

In that case then you could probably make a shroud of some sorts to fit around the metal portion of the pipe where the BOV is mounted.

I fail to understand this fixation of yours, nor do I even know what "NASA piping" is but hey, do what ya want.

 

Just use a 1st Gen DSM BOV they are made of black plastic and there charge pipes are made of rubber so it will look right. HIH

 

This "NASA PIPING" you were wondering about is this really cool looking rubber piping that my wife swiped for me from NASA (She's an E. E. out there). Read my other thread for more info. It looks freaking wicked. Your shroud idea is perfct. just going to slide a piece of the piping over the metal pipe and cut a whole for the BOV. I will post pics of the pipng within the next few days and you will see what I am talking about. Way freaking wicked sh**.

 

Pics please.
-PHiZ

 

what about mounting it on the intercooler? i know full race does this with their kits. any advantages?

 

I've always been told to keep the BOV a lot closer to the TB then that. :dunno:

 

Thinking about the mounting of the BOV on the intercooler, in theory of course, I came to the following conclusion:

The BOV is intended to alleviate pressure to prevent the surge from a suddenly closed throttle from reaching the compressor.

Placing the BOV close to the compressor, allows more of a surge to build up before the BOV opens up and vents excess pressure.

Assuming the BOV in question can vent the surge quickly enough, the turbo will still be fine.

As long as the turbo is fine, the later opening of the BOV will keep more boost in the charge pipes on quick shifts and act sort of as an anti-lag mechanism.

In theory, of course.

As a side note it seems to me this trick is only necessary if a rather large, laggy turbo is being used. That appears to be the case in these pictures.

 

Seems to me airflow would go all crazy when you blew off though.....

 

Well here's why I think it'd work, at least in the above setup.

When the throttle is closed on a shift, the air flows back across the intercooler. The BOV is lined up right parallel to the flow path. So the surge can either go straight out the BOV, or around a bend to the compressor. The BOV is the path of least resistance because it's not pushing air back on the surge like the turbo is, and out the air goes through the BOV.

Same deal as when the throttle is open and the turbo is making boost. The air can either hit the front of the intercooler and decide to go through the intercooler and up to the throttle since the engine is producing vacuum in that direction anyway, or it can go out the BOV which requires a certain amount of pressure to be directly on it before it opens. The air goes through the intercooler.

As long as the ECU is running off speed/density and not some kind of airflow meter, I don't see any problems.

But, for a more street oriented setup it would still make more sense to me to put the BOV up on the charge pipe close to the throttle.