so you want to take the hks knock off and turn it into a recirculating bov? or did i read it wrong? why cant you just get a dv or bov (samething) and have it already be set up to recirculate?

 

One thing that I am most concern is that:

1) On the dyno stock test result, the torque and rmp are climbing in harmony, but when the stock diverter fails, the rpm drops, some will notice this and some will not, and will get accustomed to the drop, not realising that the stock diverter has already raptured.


I got these pictures from ATP turbo, which provided a clear picture of my debate.

Here is what the diverter looks like.




Below is a ruptured diaphragm, from the stock motor.



There for the stock DV will not be able to do its job all alone, because no matter how we see it, it needs ablow off valve upgrade.



Here is the disclaimer from ATP turbo:
Custom machined sleeve to properly block off and disable function of the stock (electric) diverter valve on the 2.0L FSI turbo engine. Eliminates boost leaks at the valve and regain the pressure loss resulting from deteriorating diaphragm in the valve. (More into the subject at ATP.com)

Here is a clear picture of this subject.

 

Has anyone done a dyno test, before and after chipping? Has anyone done a dyno test after 6000miles or 2k with chip 1 or stage 2 w/ stock BOV?

Let's make this as a friendly, and a healthy debate.

 

most people get a new dv when the chip their car for this very reason. what are you asking? a dv and bov are the same thing. its weather or not your recirculate it or not.

 

To answer your question.....after chipping the car, the stock dv will fail within a short period of time. Its always recomended to replace the DV at the same time you chip the car.
Loved the flash posting and you thing, pretty funny.

 

I should rephrase.A BOV (blow off valve) releases pressure from the turbo into the atmosphere when you quickly back off the throttle (as in when shifting gears) to prevent a pressure surge. With that said, the stock rubber diaphragm

 

I so want to know how you running your valve to the downpipe recirculated itself? That makes no sense. ALL mafed cars get recirculated back to the intake AFTER the maf. All you did was muffle the bov, not recirculated it.

OP, as long as the valve is closed at idle you can run it vta.

 

gah this is retarted a bov and dv are the same. i can vta my dv and i can recirculate my bov.

 

i cant recirc my bov, not possible

 

The only real reason to run a bov is if your running a very high boost application and a complete built motor. Lets say 30+ psi. Less than that the dv is the appropriate way to go so you don't rich out the engine management system. So just go with an upgraded dv and a chip, and you get less turbo lag recirculating it.