bov,what can i do?
- Thread starter byohndspeed
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Striker187
Member
- :
- 2008 MS3 GT
snowboy - are you venting to the atmosphere? cause that's the money sound right there 
and i'm not gonna get a 3" turbo back. only catback. with a 3" cat. whenever i find the money, i'll get a 2.5" dp and an adapter flange to bolt up to the cat. i'm still thinking about whether or not to go 2.5" all the way through. i probably will....cause it'll be cheaper. though i don't see why a 3" turbo back will ruin the turbo. you may get boost creep but i don't think you'll ruin the turbo.
and i'm not gonna get a 3" turbo back. only catback. with a 3" cat. whenever i find the money, i'll get a 2.5" dp and an adapter flange to bolt up to the cat. i'm still thinking about whether or not to go 2.5" all the way through. i probably will....cause it'll be cheaper. though i don't see why a 3" turbo back will ruin the turbo. you may get boost creep but i don't think you'll ruin the turbo.Striker187
Member
- :
- 2008 MS3 GT
but isn't the turbo controlled by the wastegate? so how can the turbo overspool besides the occasional spike?
Striker187 said:
short answer now cuz Im tired and Ill say something stupid, Ill elaborate when I go to sleep and wake up. The wastegate deals with the pressure aspect.
Short answer: The overspool isnt noticable by a boost gauge... well a sever spike will/might occur but nothing other than that.... You will know when your shaft in the T goes kaput! or breaks a seal
Striker187
Member
- :
- 2008 MS3 GT
maybe a word from those who have a 3" turbo back?
Striker187 said:
that's run rich and stall
and yes the stock bov is from an RX-7.
Whoops...I added a step...I thought that it was counting the air, but then it was missing the air on the second pass. It was late...I wasn't thinking. You'd think I'd remember where the re-circ dumps since I installed the injen...duh!
Thanks for the back-up on the RX-7 info...I think I'll email bailey today and see what they think about using their valve to replace ours. I'd love to go atmo...but everyone else is, so how different would I really be? 
EDIT/UPDATE: Emailed AWE because Bailey's Email is overloaded. Hopefully I'll get an answer in a few hours!
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2001GTI1.8T
Member
Reading responses. I am the 1.8T guy refered to in previous posts. The DV valve stock was a Bosch unit, I would not reccomend it for applications other than stock MSP boost. If you raise boost the diaphram will rupture and cause a turkey, or more accurately "Canada Goose" sound, and you will loose a fair bit of boost. 
Average 1.8T boost with chip is 14-16 PSi, with a peak of 17-22 PSi depending on chip and mods. Even so, an MSP producing 10 PSi with a CAI would still sound nice. As mentioned, the 1.8T uses a MAF sensor, and is setup to see the recirculated boost pressure, therefore running a BOV usually results in a CEL (check engine light). Personally I find the Forge DV to be plenty loud, I will record a sound clip and post it. There is a stock DV part # 0 280 142 114 which is rated for 20PSi, available at VW/Audi stealers. Check this link for an indepth test of Bosch and Forge valves. http://www.s4biturbo.com/art-dvtests.shtml
I have my old DV kicking around, and I pick up my MSP on Friday so I will try it out soon and post results. If you want to hear a loud hybrid valve look here: http://forums.audiworld.com/s4/msgs/595680.phtml
Average 1.8T boost with chip is 14-16 PSi, with a peak of 17-22 PSi depending on chip and mods. Even so, an MSP producing 10 PSi with a CAI would still sound nice. As mentioned, the 1.8T uses a MAF sensor, and is setup to see the recirculated boost pressure, therefore running a BOV usually results in a CEL (check engine light). Personally I find the Forge DV to be plenty loud, I will record a sound clip and post it. There is a stock DV part # 0 280 142 114 which is rated for 20PSi, available at VW/Audi stealers. Check this link for an indepth test of Bosch and Forge valves. http://www.s4biturbo.com/art-dvtests.shtmlI have my old DV kicking around, and I pick up my MSP on Friday so I will try it out soon and post results. If you want to hear a loud hybrid valve look here: http://forums.audiworld.com/s4/msgs/595680.phtml
2001GTI1.8T said:Reading responses. I am the 1.8T guy refered to in previous posts. The DV valve stock was a Bosch unit, I would not reccomend it for applications other than stock MSP boost. If you raise boost the diaphram will rupture and cause a turkey, or more accurately "Canada Goose" sound, and you will loose a fair bit of boost.
I have my old DV kicking around, and I pick up my MSP on Friday so I will try it out soon and post results. If you want to hear a loud hybrid valve look here: http://forums.audiworld.com/s4/msgs/595680.phtml
no CEL, no codes are throw
meh!
works perfectly
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2001GTI1.8T
Member
Some atmo's throw codes, some not. Depends on the BOV, engine code etc. What valve are you using?
deciding between the greddy or hks
hey fellas. from what i've read it seems that the greddy type-s and hks ssqv can be vented into the air with no problems. i know that you get a louder sound when their vented but is there any type of advantage if it were recirculated? sorry, i'm still trying to learn about this. basically, i'm deciding between the greddy type-s and the hks ssqv and i was wondering what you ppl think is the better of the two. i've heard clips of both and they both sounded pretty sweet.
if i bought one of these 2 bov's, would i have to purchase any additional parts? flange? just wanted some opinions. thanks in advance.
hey fellas. from what i've read it seems that the greddy type-s and hks ssqv can be vented into the air with no problems. i know that you get a louder sound when their vented but is there any type of advantage if it were recirculated? sorry, i'm still trying to learn about this. basically, i'm deciding between the greddy type-s and the hks ssqv and i was wondering what you ppl think is the better of the two. i've heard clips of both and they both sounded pretty sweet.
if i bought one of these 2 bov's, would i have to purchase any additional parts? flange? just wanted some opinions. thanks in advance.
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