So nearly all of us are aware of the "problem" of running an atmospheric BOV. Making you run super rich during shifts and all. This is obviously due to the volume of air being dumped that has been metered by the MAF. I just noticed that Perrin sells a "Blow-Thru Boost Tube" for the STI. It sounds like all there doing is moving there MAF from pre turbo to post turbo to monitor the air that is directly going into the throttle body. Why can't this be done to the EJ22T? ECU sample rate too slow? Or is there a small latency figured in for the reading/response of the ECU? I'm not sure that it would completely get rid of the running rich...but wouldn't it help?
Sorry...I'm thinking again.
BOV ranting - Running rich? Why not relocate the MAF?
Moderators: Helpinators, Moderators
BOV ranting - Running rich? Why not relocate the MAF?
- Findlay
"You say grease monkey like its a bad thing"
http://www.toolsource.com
"You say grease monkey like its a bad thing"
http://www.toolsource.com
It can be done....Doug's done it.....search for a few posts from him.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
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douglas vincent
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- Posts: 3336
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- Location: OR, Portland
- Contact:
Nice. Are you monitoring your A/F? Just wondering if it completely takes the problem away.
The only reason I bring this up is because I see a lot of postings about the "problems" with running a atm BOV setup. This doesn't appear to be that difficult of a mod....just surprised more aren't going this route.
The only reason I bring this up is because I see a lot of postings about the "problems" with running a atm BOV setup. This doesn't appear to be that difficult of a mod....just surprised more aren't going this route.
- Findlay
"You say grease monkey like its a bad thing"
http://www.toolsource.com
"You say grease monkey like its a bad thing"
http://www.toolsource.com
-
douglas vincent
- Knowledgeable

- Posts: 3336
- Joined: Sun Apr 27, 2003 5:50 am
- Location: OR, Portland
- Contact:
Yes I have an AFR meter. I never backfire due to MAF problems.... I only backfire due to running 820 cc injectors... haha
Reddevil, Awaiting new heart, will it ever happen?
1990 wagon, EJ25 12.3 @ 116.5 FAST Family wagon getting new motor soon
1992 wagon, wifes daily, high compression
1992 Touring wagon, should I keep it?
1990 wagon, EJ25 12.3 @ 116.5 FAST Family wagon getting new motor soon
1992 wagon, wifes daily, high compression
1992 Touring wagon, should I keep it?
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BAC5.2
- Moderator

- Posts: 9026
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I made a post about this in April of 2004.
http://bbs.legacycentral.org/viewtopic. ... t=blow+dsm
Teh search.
I've learned a lot in the almost 3 years since then...
http://bbs.legacycentral.org/viewtopic. ... t=blow+dsm
Teh search.
I've learned a lot in the almost 3 years since then...
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]

