Just install GFB Hybrid BOV...review and question

theosan · Apr 21, 2004

Love it...the whooshhh sound is slightly audible inside the car still can't tell how loud it is outside....need to find a volunteer to drive while I listen :lol:

Nice looking solid piece of equipment. Seems very quick in response but didn't notice any difference in boost held compared to my old TT DV

Got it from MastroWrx.com

Now, question....
Which end goes into the boost pressure side? The instruction is confusing, it said to plumb it with the bottom going into the boost pressure side but to reference the original orientation for VW/AUDI and do it in reverse.

The problem is that I've changed DV's so many time that I don't know the original orientation anymore.

Thanks for any input.

pass-variant · Apr 21, 2004

Here's the stock orientation:

theosan · Apr 21, 2004

Thanks a million for that picture. 8)

Phatdub · Apr 21, 2004

On the GFB the part where the Piston Moves up is the hole that u wanna plumb into the lower hard pipe. Ive been running that valve for almost 2 years now. I love it. I just recently relocated it.

theosan · Apr 22, 2004

Phatdub said:
On the GFB the part where the Piston Moves up is the hole that u wanna plumb into the lower hard pipe. Ive been running that valve for almost 2 years now. I love it. I just recently relocated it.

Did you have to adjust the spring? Just wondering because I am not making as nuch boost as before installing it.

Phatdub · Apr 22, 2004

You have to adjust the spring. If your car is running more psi you should tighten the spring to prevent the valve from prematurely opening under boost. If you hear the valve make a stuttering noise when blowing off the spring could be to tight or you could have the valve on backwards. The sound should be a psssssht !

theosan · Apr 22, 2004

Phatdub said:
You have to adjust the spring. If your car is running more psi you should tighten the spring to prevent the valve from prematurely opening under boost. If you hear the valve make a stuttering noise when blowing off the spring could be to tight or you could have the valve on backwards. The sound should be a psssssht !

Thanks Phatdub. I think I may have to tighten the spring a little as I am chipped.

green99passat · Apr 22, 2004

if you find a good spring tension, ie how many turns... LET ME KNOW i had my valve on for awhile, on the right way, and i still got fluttering under low boost.

How many turns are you at?

Phatdub · Apr 22, 2004

Me too with low boost but its not that noticable. You dont want it too loost to where it would open up under high boost. Mine is turned a little less than half of all the thread.

Just install GFB Hybrid BOV...review and question

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