Go Back   Subaru Impreza Forum - WRX STI Rally Performance Tuning > Subaru Impreza Technical Area > Engine Bay

Subaru Impreza Forum

Vta Bov?
Reply
 
LinkBack Thread Tools Display Modes
Old 02 Jun 2006, 11:53 AM   #1 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
Vta Bov?

I'm new to turbo-chargers. I just bought my rex a couple of days ago and I want to upgrade a few things. I was thinking along the lines of an aftermarket BOV or an intake. A buddy of mine with an Evo told me to get a Vent to atmosphere BOV? Would any of you be kind enough to explain this to me or recommend some bolt-ons? Thanks.
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 02 Jun 2006, 11:59 AM   #2 (permalink)
jd
Obsessed Scooby
Paid & Proud
 
jd's Avatar
 
Join Date: Mar 2005
Location: here
Posts: 6,414
Send a message via MSN to jd
the standard blow off/dump valve on the impreza is a recirculation unit i.e. plumbed back into the turbo, a VTA doesnt get plumbed back & releases excess boost to atmosphere.

There are many opinions on this i.e bore wash etc.........it is all hearsay.

I have an APS twin vent dump valve which recirc below 0.6 bar then vta above that.

Be careful when choosing the dump valve as some are better than others, I have heard of Bailey units failing.

I am sure others will give you a better idea shortly.
__________________
blah blah blah
Offline   Reply With Quote
Old 02 Jun 2006, 12:08 PM   #3 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
got a bailey one on mine, due to it being on when i baught it, not had a problem yet (touch wood, pats head), gfb seem to be the best
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 02 Jun 2006, 12:18 PM   #4 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
Thanks for the quick responses, guys. I was looking at either the APS Dual-vent or the HKS Sequential BOVs. Comments?
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 02 Jun 2006, 12:24 PM   #5 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
not sure to be honest mate, sorry i cant be of more help
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 02 Jun 2006, 12:49 PM   #6 (permalink)
jd
Obsessed Scooby
Paid & Proud
 
jd's Avatar
 
Join Date: Mar 2005
Location: here
Posts: 6,414
Send a message via MSN to jd
APS dual vent is a good unit, well made & sounds the dogs.

Just check the fitment to make sure it will be compatable.
__________________
blah blah blah
Offline   Reply With Quote
Old 02 Jun 2006, 02:59 PM   #7 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
One more thing, will I have to get a retune if I put the new BOV on?
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 02 Jun 2006, 03:19 PM   #8 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
if you mean ecu map, some do, some don't depends on how well mated to the engine the one you get is
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 02 Jun 2006, 03:32 PM   #9 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
So its a hit or miss kinda thing?
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 02 Jun 2006, 03:48 PM   #10 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
um, there is engineering to it as such, some cars don't seem to like having dumpvalves with out altering ecu settings. (bog standard evo's for exmple throw a fit if you put a dumpvalve on with out changing the ecu), not knowing anything about american scoobs i don't honestly know.

best bet find a specialist
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 02 Jun 2006, 05:19 PM   #11 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
Gotcha. Thanks, mate. I just picked up a Turbo XS BOV and a APS turbo-back exhaust.
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 02 Jun 2006, 08:01 PM   #12 (permalink)
Super Moderator
Paid & Proud
 
Tidgy's Avatar
 
Join Date: Apr 2006
Location: Nottingham
Posts: 18,743
lol, that did't take you very long lol
__________________
PM, Squirrels best friend, cream egg king and resident .org spam tart/Perv
Offline   Reply With Quote
Old 03 Jun 2006, 04:47 AM   #13 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
Haha. My idle is kinda funky now. The car will quit every once in a while. I guess I do need a tune.
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Old 03 Jun 2006, 01:43 PM   #14 (permalink)
bob
Senior Scooby
Paid & Proud
 
bob's Avatar
 
Join Date: Jul 2004
Location: Bristol UK
Posts: 1,547
I had the HKS DTA on the Type R..I put it in the bin and refitted a Forge recirc. I now have a Forge VTA on the WR1 it is about to go in the bin and be replace with a recirc dump valve...
Offline   Reply With Quote
Old 05 Jun 2006, 11:58 AM   #15 (permalink)
Dr. Infrastructure
Paid & Proud
 
Gaza's Avatar
 
Join Date: Jun 2006
Location: Washington, D.C.
Posts: 5,178
Send a message via AIM to Gaza
How do you like the Forge? Thats what I had originally planned on getting but they were out of stock.
__________________
Gary
2007 STi
-Cobb AP; Turbo XS RFL; SPT Cat-back;18" Gram Lights
Offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
what happens if a standard Recirculating BOV is not working robdewell Engine Bay 3 27 Apr 2006 04:36 PM
BOV DellWRX Engine Bay 3 21 Jun 2005 09:04 AM
I know (BOV) skylight Subaru Impreza Discussions 11 03 Aug 2004 11:06 AM


All times are GMT. The time now is 10:48 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.