? for those who have bov

[GotTurbo?]

? For Those Who Have Bov

so i got the forge dual piston bov, and have some questions...anyone with a bov please help....
i was wondering if i mounted my forge bov on my ic-tb pipe, can i use my stock bpv and recirculate at the same time?
like how 505zoom did with his hks ssqv. (his system is in the how to: kill your turkey section.
cause i'm thinking that the forge bov doesn't recirculate enough...
i guess the question is can a dual piston bov work simultaneously with a bpv. is this a good idea?

another issue is that when i lay my foot on the gas in 1st and 2nd gear, over like 4000 rpm the car all of a sudden "bogs" down until i step on the clutch. what causes this? please help this only started happening after i installed the bov.
thanks in advance

 

[KyRaceFan]

yes your dual setup will work...
and it sounds like youve got a boost leak....
do you have a boost gauge?

 

[GotTurbo?]

thanks for the reply,, yeah, i got the autometer, i peak at 6.5psi, like normal, i didn't think it was a boost leak because it holds steady in 3rd, 4th and 5th gear until i press on the clutch, then i blow off....that's normal right

 

[KyRaceFan]

closing the throttle makes the BOV open.

stepping on the clutch disengages the tranmission, and takes the load off the engine.

 

[GotTurbo?]

so now i'm confused, i blow off during acceleration after it peaks at a steady seven and when i let go the gas, and i also blow off when i'm boosting and dump the clutch,
i understand what you're saying kyracefan, and what you wrote makes total sense, but then what's wrong with my bov,
is it a boost leak? or is their nothing wrong at all?...
sorry for all the ?s this is my first FI car(boom07)

 

[KyRaceFan]

Your BOV should only open when you let off the gas and close the throttle.
It sounds like its not installed right.
Make sure you have a vacuum hose with a good boost source connected to it.

I also dont understand why youre dumping the clutch... Simply pressing/releasing the clutch has no relation to the BOV..

 

[GotTurbo?]

thanks man, i was thinking of getting dedicating vacuum lines for everything instead of splitting them off like i have now. you think this will help?..
so it is a boost leak then huh?.. cause i know the bov is installed right, i think(boom07) , it's the forge bov, and if i fffed up on that then i'm retarded
oh yeah wasn't really dumping the clutch, sorry misuse of words

 

[TheJohnny]

Yeah, what kyracefan said. I ran a new line for mine and I tried a stupid setup (see above) before going to the correct install, notice new vacuum lines....The picture on top was me wanting to mess around with this thing. It never stalled that way but you could never really hear it, only a bit. Now with the way I have it, damn...at 12 psi the thing sounds sick man....it's a ton of psst with a side of the gobbler... he he! Anyway, hit me up if you have any questions, like you I'm going to mount it onto the t/b i/c pipe once I get my new set up pipes so I can experiment with it. I'll post pics but it won't be until after protegefest when I get them.

 

[GotTurbo?]

so, that's it then, boost leak huh? gonna go to autozone and buy the y connectors and use them by tapping into the brake booster line,
that should be the best source of vacuum right? think that might solve my problems?

 

[KyRaceFan]

Well it might be a boost leak if you have it installed backwards,and above 4000 youre definately in boost and it might be opening instead of staying closed.
That might explain the massive stumbling, since there is a since a huge air leak, and you're starving the engine.
Go double check the install, and vacuum lines.

 

[TheJohnny]

sure, just watch out for the one way valve, you can feel it just make sure you don't cut it... he he.

 

[GotTurbo?]

cutting in the middle right, that should be safe, what does this one way valve look like? is that a dumb question? took me forever to figure out which was the brake booster line...might just have the shop do it, but if i can save the money i'd rather.

 

[GotTurbo?]

Well it might be a boost leak if you have it installed backwards,and above 4000 youre definately in boost and it might be opening instead of staying closed.
That might explain the massive stumbling, since there is a since a huge air leak, and you're starving the engine.
Go double check the install, and vacuum lines.

another ?. the bov goes only one way its the forge one like "thejohnny" has in the above pic. mine looks exactly the same, 'cept that he has dedicated vacuum lines,
what the f did i mess up on?

 

[KyRaceFan]

No clue then....
check all the other pipes and stuff and make sure they are tight.

Also, can you please explain the "hesitation" above 4k.
What exactly happens.

 

[GotTurbo?]

going from 1-2-3-4000 rpm fine, hits 4100 or so then the whole car like bucks like a bronco, only happens in first and second though, not 3rd or fourth, if i shift before that, you wouldn't even know it happens.

 

[KyRaceFan]

try putting the stock BPV back on and see if you get the same problem.

 

[MazdaSpeeder00]

going from 1-2-3-4000 rpm fine, hits 4100 or so then the whole car like bucks like a bronco, only happens in first and second though, not 3rd or fourth, if i shift before that, you wouldn't even know it happens.

Is this at full throttle? Im having the same problem since my BOV was put on. My BOV blows off when I engage the clutch at higher rpms and when i shift. I believe thats normal. I cant figure out the hesitation though. And he's right, it bucks like a bronco. Someone mentioned that they thought the car was dumping to much gas at boost and the car hesitates until the gas is burned. I hope someone has some insight to this because im wiggin out! Here's pics of my recirculated setup. I dont know if that helps at all, and i can take some from different angles if need be.

 

[KyRaceFan]

Mazdaspeeder, im not very familiar with your greddy BOV, but theres a silver vacuum source shown in 2 pics on the BOV. You have the vacuum hose attached the the top(purple). Have you tried switching the hose?
But like i said, im not 100% familiar with the greddy layout. If you had an HKS, i could tell you what was wrong.

Also, the greddy doesnt leak at idle, so theres really no reason to recirc it. Vent that sumbish!

 

[TheJohnny]

reset your computer to start with and then put your stock BPV back on like Kyracefan stated, then you'll know if it's your new forge valve....I personally get no hesitation at higher boost, even now that I'm at 13 psi I still don't have a problem, and the wonderful thing is I'm not getting fuel cut (spark cut) either...oh yeah baby...Weird though, I used to get it, but now I have the joe p fpr and what do you know, no more fuel cut even without the defender.

 

[MazdaSpeeder00]

Mazdaspeeder, im not very familiar with your greddy BOV, but theres a silver vacuum source shown in 2 pics on the BOV. You have the vacuum hose attached the the top(purple). Have you tried switching the hose?
But like i said, im not 100% familiar with the greddy layout. If you had an HKS, i could tell you what was wrong.

Also, the greddy doesnt leak at idle, so theres really no reason to recirc it. Vent that sumbish!

Are you talking about that stem that sticks out in pics 1 and 4. I think that is where the air shoots out to make the noise.. I dont know though because im new to all this. I will take a look. If i do switch them and it is the wrong way, will anything bad happen or is it ok to try.