my cams say I hate blow off valves!
The people with APS/1GDSM/MR DV/TIAL/TOMEI/ any others with 272 CAMS.. I'm assuming you guys are on stock ECU as well?
Don't mean to be **** just want to be sure!
Wartalon... maybe ur right.. if stocker goes good for me.. MR DV is what I'll settle for, That's right I want most durability out of anything I have and not trying to shorten life of my turbo or my car... I want to stay on stock turbo but run max PSI on it... if the event it does go someday.. 20G might be something I'll look into but as for future goals a turbo upgrade is not what I'm thinking about.
Don't mean to be **** just want to be sure!
Wartalon... maybe ur right.. if stocker goes good for me.. MR DV is what I'll settle for, That's right I want most durability out of anything I have and not trying to shorten life of my turbo or my car... I want to stay on stock turbo but run max PSI on it... if the event it does go someday.. 20G might be something I'll look into but as for future goals a turbo upgrade is not what I'm thinking about.
Originally Posted by RRRS
i had same problem after my cam install. after weeks of frustration and adjusting my adjustable BOV, turns out it was way too tight, i loosen it ALOT. didn't have stalling probs before the cams with the same BOV tight or loose.
my cars idle dips a bit but have not stalled coming to stop ever since. so try the single spring mod(not sure if u did this already) i bet its the problem.
my cars idle dips a bit but have not stalled coming to stop ever since. so try the single spring mod(not sure if u did this already) i bet its the problem.
I didn't heard anything bad about the Tomei.. just that I haven't heard much about it either... I don't think I said anything bad about that BOV..
I'll tell you HKS ssq sucks ***** if your looking to have a performance car.
Evolved Member
iTrader: (7)
Joined: Aug 2004
Posts: 1,252
Likes: 0
From: Del Monte Beach, Monterey, CA
Its because after the cams it doesnt idle as cleanly as stock.. so if there is already and issue it will get worse. Switching to cooper plugs and changing them every 3000 miles would help that a little.. also when you running one step colder plugs the car just get a little sloppy when cruising around town.. and thats with a stock bov.. with a works tuned GFB, I couldnt let my foot off the gas going up a hill without the car stalling.
the MR valve will be louder since its metal.. and metals resonate sound more then plastic.
the MR valve will be louder since its metal.. and metals resonate sound more then plastic.
Originally Posted by ev08buoy
So I'm assuming you have the greddy type S... I thought the RS didn't require single spring mod.. I also heard single spring mod can't hold much boost but I don't to get into that right now.... The whole point is yah.. I'm a freakin idiot for getting type RS why?? I have no f_ckin clue why I did this, am I too young to have an Evo or something?
I didn't heard anything bad about the Tomei.. just that I haven't heard much about it either... I don't think I said anything bad about that BOV..
I'll tell you HKS ssq sucks ***** if your looking to have a performance car.
I didn't heard anything bad about the Tomei.. just that I haven't heard much about it either... I don't think I said anything bad about that BOV..
I'll tell you HKS ssq sucks ***** if your looking to have a performance car.
IMO, the bov should not be totally closed at idle/no throttle to let excess air out, the vaccum should hold the bov openjust a bit, with cams, the vacum decreases causing the bov to close?
Originally Posted by RRRS
actually i have a turbosmart dual port. I too was blaming my stalling probs on my flash and MAF, i was ready to get a standalone because of this, until i heard of loosening the bov, so i did, it got better and i loosened more. now it just dips a little bit, no more stalling.
IMO, the bov should not be totally closed at idle/no throttle to let excess air out, the vaccum should hold the bov openjust a bit, with cams, the vacum decreases causing the bov to close?
IMO, the bov should not be totally closed at idle/no throttle to let excess air out, the vaccum should hold the bov openjust a bit, with cams, the vacum decreases causing the bov to close?

Last edited by Nez136; Nov 4, 2005 at 11:45 AM.
Originally Posted by Nez136
This sounds logical, but, the HKS works when there is a pressure change, so the Vaccum is not holding it close, the spring is... The best way to steer away from MAF problems is by getting a MafTPro(eliminating the MAF)
the spring mods on a Greddy are a waste of time - it will allow the BOV to hold slightly more boost but it also tends not to open when it should either
We've run cars to 26 psi with the MR BOV - so long as it is installed properly, you should not have any issues.
Never used the Tomei BOV - and I would not be surprised to find out if it was nothing more but a stock MR valve. Tomei has recently been rebadging alot of their parts in an effort to offer more products. Lot's of firms do this - ever see an HKS Kansai fuel pump? I've asked Tomei about this several times and have yet to get a straight answer.
The only proper way to run the BOV with a stock MAF is recirculated. You "might" be able to get away with venting with stock cams, which pull more vacuum than a 272 does, but even then, I've been in cars with stock cams and a vented BOV that could also stall from time to time
We've run cars to 26 psi with the MR BOV - so long as it is installed properly, you should not have any issues.
Never used the Tomei BOV - and I would not be surprised to find out if it was nothing more but a stock MR valve. Tomei has recently been rebadging alot of their parts in an effort to offer more products. Lot's of firms do this - ever see an HKS Kansai fuel pump? I've asked Tomei about this several times and have yet to get a straight answer.
The only proper way to run the BOV with a stock MAF is recirculated. You "might" be able to get away with venting with stock cams, which pull more vacuum than a 272 does, but even then, I've been in cars with stock cams and a vented BOV that could also stall from time to time
Last edited by Z1 Performance; Nov 4, 2005 at 11:55 AM.
well thanks all for extremely quick posts... I want something sure this time so I think I'll go with the JDM MR.. its cheap anway
I wish I could do some more experimenting with APS but I really just want to drive my car again before I start doing more work to it. The APS is not really cheap either.
I wish I could do some more experimenting with APS but I really just want to drive my car again before I start doing more work to it. The APS is not really cheap either.
Originally Posted by Z1 Performance
The only proper way to run the BOV is vented. You "might" be able to get away with venting with stock cams, which pull more vacuum than a 272 does, but even then, I've been in cars with stock cams and a vented BOV that could also stall from time to time


