Actually, before or *on* the intercooler is ideal.

The purpose of the BoV is to prevent the throttle plate from closing and causing air to surge back through the compressor blades on the turbo. Having it closer to the compressor outlet allows it to vent air from the intercooler core and retain air in the piping between the intercooler and throttle plate. This means that the compressor has less piping to fill when the car is back in boost, meaning slightly better boost response between shifts.

That's the theory, at least......

 

thats a very interesting explanation craig, thanks for clearing that up with me.

the way i had pictured it in my mind, it seemed most logical ( to me at least) for the BOV to be closer to the throttle butterfly. this way, when the butterfly closes, the charged air has a quick path of escape through the BOV, since it would be so close. however, after thinking about it for a minute or so, your explanation makes more sense

 

the biggest pressure buildup will be between the turbo(s) and the intercooler. my vote (and choice) is weld them right on the end tanks....if you have the option.

 

Right, but how many of us are willing to cut into our $800+ intercoolers? That's why I'd prefer to do it right before.

 

Best for your turbo= before intercooler(Less compressor surge)
Best for throttle response=after intercooler(More compressed air in system)

 

I'll agree to disagree on the last part. It's not compressed anymore if you're pushing it out of a BoV. Either way, the response aspect of it is very minute for the most part. First and foremost issue is avoiding compressor surge.

 

If you're worried about damaging a turbo you could always just run 2 BOV's one pre-intercooler one after

 

this totally contradicts what Craig just posted

 

hhahah.. why not just make it an even four? That'd be JDM tyte.

 

I would definitely rather have a turbo that lasts 20k miles more than slightly better throttle response. That's why NLTS was invented!

 

In high HP cars we run two BOV's however we tend to run them near the throttle plate. In the end pressure is pressure and once an opening is created pressure will exit out of the path of least resistance.

Once the throttle plate is closed pressure doesen't necessairly reverse direction, however it could stay dormant.

 

Will you guys STFU?

JK.

Like Andrew said, the best option would be before the turbos and intercooler.

 

BOV's before the turbo's?

 

SORRY to add to the confusion. I mean between the turbo and IC.

 

lol, i was pretty sure i knew what you meant, i was just being an ***

 

i actually run two BOVs before the turbo on the intake pipes, two on the intercooler on the very top of it, two on the intake manifold, two on the boost solenoid, two on the muffler and two on the rear two injectors...


i get the best throttle response, best injector firing, best intercooler safety ( big in my book ) best turbo intake safety and of course, i can spool up at full boost by 1250 rpms....

 

too bad we're not all ballers who can afford to run 12 bov's like you jeremy. only one for me.

1 BOV=Scrub Status
2=low-level pimpin status
12=Baller status

 

someone's been hittin' the sauce

 

i actually have 6 of them that i put in the back of my car for better traction.



more weight in back = better traction

 

What about one BIG BoV?