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Old 09-04-2012, 10:09 PM   #326
legacydreamz
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Quote:
Originally Posted by Bansheeboy11
It did on my car, stock ej20 with a catless exhaust. Vacuum/boost transitions and spool are improved a bit, as well as boost control at higher rpm.
I'll give it a try. Best thing about this mod is that its 100% reversible.
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Old 09-04-2012, 10:10 PM   #327
Djimpreza02
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So, I've only read up to page 11....

But is this a good mod or not? I heard the stock BOV should not be touched until your using over 22PSI of boost? Or else it will in-fact hurt performance.

Does this mod also cause any more of a blow off sound.
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Old 09-05-2012, 06:56 PM   #328
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It made my bpv more noisey and it holds boost alot better between shifts.
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Old 09-06-2012, 02:31 PM   #329
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gnna try this out. hopefully i feel a gain
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Old 09-06-2012, 03:47 PM   #330
Djimpreza02
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Has anyone seen the results on a tune or dyno? I think that is the major determination for doing this or not?
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Old 10-15-2012, 03:14 AM   #331
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bringing this thread back to life. any more results anyone?
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Old 10-15-2012, 02:54 PM   #332
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good idea wish i could do that to my parents but i'd need the money simple mods like this r what i like to see. got anymore simple cheap mods?
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Old 10-15-2012, 11:12 PM   #333
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Just crush the bov it will work good
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Old 10-15-2012, 11:35 PM   #334
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Quote:
Originally Posted by legacydreamz View Post
I'll give it a try. Best thing about this mod is that its 100% reversible.
Quote:
Originally Posted by d0ugch0i View Post
bringing this thread back to life. any more results anyone?
My overboosting ended up being oily vacuum lines coming off the solenoid.

I got to really drive the car hard over the weekend with some buddies, did about 250 miles around the mountains over saturday night. Going from full brake to full throttle gets me nice, quick and steady spool, and a rock solid hold on the boost, quick vacuum/boost transitions seem to be a bit quicker/smoother as well. About 3 weeks ago we did this to another buddies car who also feels its improved driveability in the same ways i did, all in all this is a winner! I even bought some extra set screws incase my buddies want to do it haha
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Old 10-16-2012, 09:31 AM   #335
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Quote:
Originally Posted by Gil View Post
did this today on my 05 LGT.

i borrowed a 1/4-20 tap from a friend and then put one of these in there. 83 cents for a pack of 2 at home depot.



I've done this exactly.. with the +08 plastic valve and have seen no adverse effects. 3mm vent in the side. Can now run 19psi on this plastic version with stock VF38.
+1 for this mod.
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Old 12-19-2012, 05:00 PM   #336
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I am running this just like above on the plastic bpv but now am running a td06 20g at 22psi on e85. Do you think it will hold up or should i bite the bullet and buy a forge recirculating bpv? I think its still working fine and my tuner was impressed but just wondering how far you guys have pushed this mod befor the breaking point.
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Old 12-19-2012, 05:19 PM   #337
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Quote:
Originally Posted by nate_fisher View Post
I am running this just like above on the plastic bpv but now am running a td06 20g at 22psi on e85. Do you think it will hold up or should i bite the bullet and buy a forge recirculating bpv? I think its still working fine and my tuner was impressed but just wondering how far you guys have pushed this mod befor the breaking point.
Modded properly, the more boost the tighter the BPV will be held closed... as described.

In other words, you are fine.
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Old 01-22-2013, 11:28 PM   #338
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Excellent mod. Amazing bang for...well it didn't co$t me anything!
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Old 01-31-2013, 07:21 PM   #339
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For something as serious as drilling a goddamn hole in your BPV, you would think people would have some better photos.

I want to do this, since it's free, but I haven't gained the appropriate confidence here.

Where on the stock BPV do I drill a hole in it?
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Old 01-31-2013, 07:40 PM   #340
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Quote:
Originally Posted by blehhh View Post
For something as serious as drilling a goddamn hole in your BPV, you would think people would have some better photos.

I want to do this, since it's free, but I haven't gained the appropriate confidence here.

Where on the stock BPV do I drill a hole in it?
Read the whole thread before your flip out.. They are on the second or third page
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Old 01-31-2013, 07:46 PM   #341
blehhh
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Originally Posted by bluemk3 View Post
Read the whole thread before your flip out.. They are on the second or third page
Those posts are from years ago, previous generation cars with metal BPVs.
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Old 01-31-2013, 08:57 PM   #342
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why not post a picture yourself?
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Old 01-31-2013, 09:37 PM   #343
blehhh
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why not post a picture yourself?
Because I haven't done it?
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Old 02-01-2013, 06:10 AM   #344
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i mean of your virgin oem plastic bpv, so that someone can point it out to you.

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Old 02-27-2013, 11:13 PM   #345
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Bumping this thread again. Anyone got a pic of the side vent hole they drilled on the newer plastic BPVs?
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Old 03-06-2013, 11:32 AM   #346
turkeylord
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Just did this to mine last night - first drive definitely felt like it was easier to hold boost through shifts. Lovin it.

norbs - I drilled just high enough to be sure to clear the set screw.
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Old 03-06-2013, 03:16 PM   #347
KMA2
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Quote:
Originally Posted by norbs View Post
Bumping this thread again. Anyone got a pic of the side vent hole they drilled on the newer plastic BPVs?
Also interest in this... thx.

[edit]

Found pics here: http://forums.nasioc.com/forums/show....php?t=2169450

So here are the pics needed:

Quote:
Originally Posted by Gil View Post
Quote:
Originally Posted by Seventh View Post


Last edited by KMA2; 03-06-2013 at 03:57 PM. Reason: Found it
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Old 03-06-2013, 09:17 PM   #348
KMA2
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Quick question: I've read through the thread, but I'm hoping someone can explain to me why the stock BPV valve isn't designed this way to begin with? Is it to avoid surge for the "normal" stock driver? Thanks in advance.
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Old 03-07-2013, 05:44 AM   #349
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yes, the stock valve will open with less pressure differential.

why they didn't just use a weaker spring? who knows.
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Old 03-07-2013, 01:33 PM   #350
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thanks

Last edited by Rescuer; 03-07-2013 at 02:38 PM.
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