i was plannin on purchasin a BOV sometime soon and i was wondering which is the best bang for your buck and what i should stay away from....? also what do i need to install and u think its simple enough for myself to do it or should i take it to a shop? any info can help thanks guys!

 

stay away from the Apex. it sucks hairy donkey *****. i have not heard of one person completely pleased with it. it leaks boost most of the time.

all the other BOV's are the same. get which ever one sounds the coolest to you. i like the Blitz unit.

all the single turbo guys reccomend the TIAL BOV, but i think it is not needed unless you are running really high boost pressures.

go with the Blitz BOV.

just my .02.

 

I used to work at a shop and I've done some turbo installs on plenty rice mobiles. The GReddy's and HKS's have never messed up. On 2 occasions I've had BOVs stay in the open position (once on my friends MR2, and another on a customers MR2), easy fix though. I use a Blitz on my Rex cause it sounds best HKS's racing BOV is very high pitched, sounds good if you like it.

 

I bought my FD with the Apex installed, and to be honest I wouldn't even know how to judge a good BOV. I mean, it's just for show anyway. If it leaks boost that's surely something to worry about, but I wouldn't know how to tell if it was doing that either. Would you listen for venting boost above a certain RPM level?

Osker24,

You shouldn't have much trouble installing it yourself. It only involves two hoses: 1) small vac hose on the manifold (next to the boost gauge nipple) and 2) larger vac hose coming out of the center of the Y-pipe. Just take these two hoses from the stock BOV and run them to your new one. The stock BOV vents into the airbox, but I assume most aftermarket BOVs do not (the Apex doesn't), so you'll remove the hose going from the BOV to the airbox and plug the hole.

Hope that made sense.

 

best overall bov? it the stock one. if you want to listen to it just uplug it from the air box

mike

 

i have a question, today i unplugged both of the hoses conected to the airbox (not knowing which on is the BOV one) and I drove around, and no sound? What could be the problem>

 

greddy type R

 

First of all, you want to plug any holes you leave open in the air intake Box (or any intake) otherwise you will be sucking in unfiltered air into your turbos. For my Apexi power intake I got some rubber hose a little bigger than the size of the pipes coming off of the intake and then pluged the rubber hose with silicone-tape-wrapped rubber stoppers made for vaccum hoses. The reason I did that was I couldn't find any stoppers the size of those intake pipes and I didn't want the rubber stoppers getting sucked into the turbos. I got the hose and stoppers at my local automotive shop.


I unpluged both of those hoses and I can hear mine just fine. A noticable 'pshhhhhhhhtttt'


One question, are their two BOV on the TT?? One seems to come off of the Y-pipe, and I can't tell where the other is connected. There does seem to be two one way valves, but maybe not both BOV's...

-Dave

 

greddy type r. the thing is a monster.

 

I agree with Alf ... but if you're not running more than a bar then the Type R isn't good for you. In that case, go for the Type S for lower boost apps. I've never heard a credible report of a GReddy being faulty, but I've heard it about A'PEXi and HKS over and over.

 

HKS SSBOV's are very good!!! It has a nice high pitched sound. If you plan on running 15PSI+ the HKS racing BOV is the way to go

 

i have an apexi bov and i like it

 

DK: About the reports of HKS's faultiness. Are these with the old design made in plastic? I'm just curious, so I can stop reccomending this unit to friends.

 

One is the BOV the other is the Charge Relief Valve (CRV). It vents the boost while your secondary turbo is being pre-spooled (3000 - 4500 RPM). They're both connected to the Y-pipe, but the connection that's easiest to see goes to the BOV. CRV is connected to the rear of the Y-pipe.

http://home.istar.ca/~dvandit/Turboc...BigPicture.htm

 

anybody here try replacing their crv with an aftermarket bov? only asking since my crv is leaky.

 

I got a deal on two ARC BOV's so I hooked one up as a BOV & the other as the CRV. I made sure they vented in a direction that doesn't get too close to anything. Basicly both point downward.
If you look close at the photo you'll see the BOV forward of the strut bar & the CRV just aft of it.
Any performance diff? Nope, just looks cool & makes a louder whoosh sound. I messed with the spring tension on both, didn't seam to do much. Just would increase sensitivity & vent sooner.

 

I can't find a price for a stock CRV but I would think it would be cheaper than the couple hundred dollars you'd pay for a BOV. Plus there would be no performance gain that I can think of.

 

 

HKS

 

It depends on how loud and obnoxious you want the car to be. I just disconnected my stock one and put a K&N crankcase breather filter on the end of the hose just so nothing can get in and out. It sounds pretty good. Before you spend a few hundred dollars on an aftermarket BOV disconnect the stock one and see if you like the sound.

Clint Fralick
Struggly@hotmail.com

 

Hands down the best BOV!
More adjustments than any other. Used by Cart Champs for years.
Check it out here
http://www.takakaira.com/accessories...ightpager.html
You can even listen to the wicked sounds it makes!

 

The things ricers will buy.

 

Yeah ... well it's all of them except the Racing II. And it's really weird for me to hear that and believe that because I really believe in HKS. Their electronics are, in my humble opinion, second to none as far as broad-scale tuners go and their suspension parts are very very good. I guess HKS is not infallable, though ... just look at what they're still using as intake filters (not that I don't have it on my car! ).

 

All i have to say is that Apexi bovs suck. They sound and perform like **** comparted to the Greddy Type S and the Hks ssqv. I think the best bang for the buck is the Hks ssqv. It is the best operating one and never had one problem with it. The Greddy sounds sweet but i had a couple of problems with it. Hks never let me down

 

I've been running an Apexi on my Supra for about 3 years and never had a problem with it, running from stock boost up to a little over 20#s and it's been great. I also like it's sound, and everyone that's ever heard it has liked as well.
I've been running Greddy's on a couple of FDs for even longer and they've worked great too, allthough they don't sound as manly as my Apexi
Also have run the HKS SSBOV and that one has worked quite well too on an RX.

Not sure why there'd be much problem with the metal BOVs, most are very simple with very little in points of failure. Some may need to go with a stiffer spring but I haven't experienced problems with any of the standard springs yet...