dro-balt ss

installing a bov today on my upper charge pipe flange, how many of you shut your bypass valve spring to stop flutter or is that not needed?

buildmeanempire

iTrader: (5)

I assume you're getting tuned for this and relocating your maf?

CudaJoe

iTrader: (1)

well, I would say everyone uses a block off plate with a BOV. Nothing would work right otherwise.

Have fun with your CELs

09CobaltSS1

I've personally actually always had the best luck with a vta bov using both the bpv and bov together (just make sure the bov is NOT sharing the port on the bpv solenoid with the bpv. It MUST have a direct manifold vacuum source). It sounds silly but this allows you to get the sensitivity of the bpv at light/medium throttle, no super rich spikes in between shifts and still lets your inner ricer shine for more spirited driving. In order to stop the ecm from going into a pissed off tizzy every time you let off the throttle or go into a high vac situation like dfco though you really need to set the bov adjustment relatively tight. This in a way defeats the "ricer" purpose of having that nice vta bov sound, but that's really the only way around a crap ton of issues.... short of a maf relocate that is of course. But that's another whole tuning nightmare in itself. lol

Long and short of it, bov's are just a nonsense headache that's just NOT worth it on the stock turbo in my, and many others on here that have had to deal with this sort of thing first hand. Just save yourself and your tuner the frustration and get a short ram cai with the stock (or forge) bpv and call it a day.

user 72239

iTrader: (4)

I dont have any problem with my VTA Forge. I got 1 CEL for BPV stuck closed and when I greased the Forge unit, I haven't got it since.

09CobaltSS1

Those units tend to be quite a bit less problematic than a "standard" vta bov though to be honest. They still give the car heart burn from time to time due to there being no recirc, but not nearly the agita a vta gives. Not to mention the fact that soooo many bov's leak right out of the box and most tend to not really be aware of this so the issue never gets addressed.

dro-balt ss

got a zzp charge pipe for a good price with the flange and a zzp bov.. soo i plan on getting tune soon

tomj77

iTrader: (2)

Buy a block off plate

roadrunner132

I'm running hks and forge bpv with trifecta Ecp tune with no problems. No surge or flutter. Anything over like 5 pounds is pushed to bov.

dro-balt ss

did u have to do anything to stock bypass valve?

oh didnt see forge bpv

09CobaltSS1

Trifecta ecp tune is essentially a speed density tune. Completely different than tuning with a maf.

roadrunner132

You could run the stock bpv and it wouldn't matter.

roadrunner132

I ran my setup for a few months before I got tuned with no issues at all.

Every time I put my block off in I would have a whole lot of flutter. No flutter at all when I run with the bpv.

LNFTX

You should not run a bov without a tune not even for a short time
Hell you shouldnt run one on the stock turbo period,system just isnt designed for it your basically installing a boost leak

09CobaltSS1

Exactly. Like I said above, I've always had the best luck by running both a vta bov and bpv together in cars that the owners are hell bend on running a vta with the stock turbo. It all just needs to be setup correctly to work well. I think a block off plate is a terrible move either way.

09CobaltSS1

I endorse this message.

dro-balt ss

ended up not hookin up the vacuum line and putting a rubber cover over the line-in. still wanna hear what kinda noises the bov will make tho...

dro-balt ss

update. zzp bov o ring blew and boost leaking like crazy only at 5psi ffs

DCsnow1000

^ make sure you put some Molykote or similar on it to keep it swollen so you get a good seal. You probably didnt have it fully seat and it got vented to atmosphere with your boost.