Blow off Valve??

[20SPEED03]

What exactly does i do and which is the most recomended?

 

[CasopoliS]

What exactly does i do and which is the most recomended?

lol... ok

so this has been discussed a lot on this forum

#1 - our cars do not blow into the atmosphere from stock , they recirculate back into the intake
#2 - if you replace this valve with one that blows off (hissssss), then your engine will choak because it thinks it is getting that air when it is not. You will have stalling issues.
#3 - you are more than welcome to replace the valve with another bypass valve / diverter valve (same thing)... these types of valves will recirculate the air back into your intake for you. You will still get the turkey (surge) sound when you shift though
#4 - if you want that hissss from a BOV, then get a BOV and put it on the pipe from the intercooler to throttle body and KEEP the other black valve in place
#5 - I like my HKS SSQV BOV

USE THE SEARCH FUNCTION AND YOU FILL FIND OUT ALL YOU NEED TO KNOW

 

[Striker187]

http://www.msprotege.com/forum/showthread.php?t=42337&page=1&pp=15&highlight=bov

go down a few posts and start reading. but seriously, search! i know there's a bunch of crap to sort through but if you read it all, you'll gain a lot of knowledge and be able to sort the good info from the bad.

 

[hazeXban]

Since someone else will say it.

YOU CAN VENT to ATMOSPHERE and not experience :"your engine will choak because it thinks it is getting that air when it is not. You will have stalling issues."

I vent and my buddy goku does as well and neither of us have "choak" or "stalling" issue. Some people do some people don't.

 

[CasopoliS]

Since someone else will say it.

YOU CAN VENT to ATMOSPHERE and not experience :"your engine will choak because it thinks it is getting that air when it is not. You will have stalling issues."

I vent and my buddy goku does as well and neither of us have "choak" or "stalling" issue. Some people do some people don't.

90% have issues - 10% dont and I think that is being generous.

 

[hazeXban]

90% is ludicrous. No way that many can't vent while us special few can, makes no sense.

 

[CasopoliS]

90% is ludicrous. No way that many can't vent while us special few can, makes no sense.

you are saying you have NO issues? You don't have dipping idle problems upon fast RPM drops / decelerations? That is what I am talking about. And yes a smaller amount of people vent, a much smaller amount.

 

[hazeXban]

I have 0 issues, period. Just woosh woosh and no turkey at all (kinda sad about that). That being said I don't want to argue about it hehe, its true that a lot of people have trouble I just don't think its such a high ratio.

But to explain real quick. BOV is there as a valve to release air out of the charged side of Forced Induction setup because when the Throttle Body closes the air needs some place to go and it vents through the BOV as to not run back into the turbo and cause compressor surge which will wear your turbo down. I think thats the BASIC jist of it.

 

[CasopoliS]

I have 0 issues, period. Just woosh woosh and no turkey at all (kinda sad about that). That being said I don't want to argue about it hehe, its true that a lot of people have trouble I just don't think its such a high ratio.

But to explain real quick. BOV is there as a valve to release air out of the charged side of Forced Induction setup because when the Throttle Body closes the air needs some place to go and it vents through the BOV as to not run back into the turbo and cause compressor surge which will wear your turbo down. I think thats the BASIC jist of it.

vewy good grasshoppa.
and ideally the BOV should be near the turbo or on the hot pipe somewhere

the BAD thing about 100% vent - your MAF is telling the engine its getting air that it is not because it is prior to the BOV (assuming you have not relocated the MAF). Your car gets no air but delivers fuel for that air - so you run pig rich at shifts.