Any vent to atmosphere BOVs in Calgary

[calgary_bulldog]

Is anyone in Calgary running a vent to atmosphere BOV? I believe that the Stealth is designed for a recirc, but I love the sound of a loud BOV. I previously had one on a Miata and I thought it sounded great. I heard one on a SRT-4 which was crazy loud(probably a RFL). Will putting a vent to atm BOV on a Stealth TT be worth it or just a ton of headaches. Will I have to worry about running too rich and/or stalling (or check engine light) from the expelled air. Any experience in Calgary would be appreciated; or recommended BOV's and fitment kits. Also would I need 2 BOVs as it is a twin turbo.

[55gto55]

You only need one BOV, and the Greddy Type RS work well on our cars.

[calgary_bulldog]

Is it the vent to atomsphere or recirc type? Is this speculation or do you have one on your car? If so was it plug and play or a bunch of fine tuning(spring tensions etc)

[55gto55]

sorry its actually a Greddy Type-S BOV, and ya its a vent to atmosphere style one. Actually i have an HKS SSQV on my VR4, but if i were to do it again i would go with the greddy one. My only complaint is they tend to get pretty pricey. It was pretty much bolt on, not too much fiddleing around to do.

[surreal]

yep ya only need one bov.
most bovs can be vented to atmosphere or recircd back into the intake. the greddy type-s is popular because its easy to recirc, but its now discontinued (still easy to find used tho).

im using a vented hks ssqv right now. altho you can set it up to recirc if you want, i havent had any problems running it open. that being said, i DO get crappy gas milage ... but i think thats because i am running without nb02s right now haha.

so far ive been happy with my ssqv... it was kinda a little loud at first but ive gotten used to it. ive got another ssqv and an rfl kicking around that ill probably use when i switch to a fmic.

[calgary_bulldog]

Surreal any problems with your vent to atm? Did you need to adjust the SSQ? Check engine light or running too rich? Any stalling while shifting into neutral from higher revs? Is your TT parked for the winter?

[surreal]

Surreal any problems with your vent to atm? Did you need to adjust the SSQ? Check engine light or running too rich? Any stalling while shifting into neutral from higher revs? Is your TT parked for the winter?

actually i was surprised that i had no problems at all. no check engine lights (1g but shouldnt matter) and no stalling. if everything is working properly, you should run a little rich for a sec between shifts.

and nope, the tt is out tearin it up on the streets this winter.

[Snortin93]

Actually the beauty of the Greddy Type-S is that it is a recirculating BOV, and fits right in where the old one was. That's why I went this route. I don't know about running it open loop.

Memystealthandi had an RFL, and I don't think I've ever heard anything louder! 3 cars behind him, both going WOT, and I could hear every shift he made. I think the only problem he ever had with it was when he did a BOV salute to a Ferrari, which promptly smoked him very badly. :whoa:

[Fast Eddie]

Alot of people talk about the stalling issue of venting to atmosphere, but I dont know anyone that had this problem. I have an HKS (atmosphere) and never had a problem. Ran it in suck-through and blow-thruough setups. Most of the guys in the Toronto area meets with aftermarket BOV's vent to atmosphere and nobody mentioned a problem.

We would go for drives with 6-8 cars runing HKS, RFL, Blitz and Greddy open loop, and nobody ever stalled... I wonder how true this rumor is.

[memystealthandi]

Memystealthandi had an RFL, and I don't think I've ever heard anything louder! 3 cars behind him, both going WOT, and I could hear every shift he made. I think the only problem he ever had with it was when he did a BOV salute to a Ferrari, which promptly smoked him very badly. :whoa:

Haha. I was going to jump in here...Hwy 8, what a run with that Ferrari!!


Yes, I was running a Turbo XS Type H-34 http://www.3sxperformance.com/bovs.asp
with a Turbo XS RFL spring. The H-34 is the best of both worlds, because you can easily flip it between open/closed loop. You will need the stiffer spring from the RFL to run it open loop. I just emailed turboXS asking for a 'replacement' RFL spring and they sent it free of charge. You WILL stall out (scary trust me) if you do not run a stiff enough spring rate. I ran 4 washers plus the RFL spring and had no problems.

The RFL is a great sounding BOV, VERY VERY loud, but IMO the quality of the manufacturing is not up to par with Greddy, HKS, etc. You get what you pay for. I have seen the turboxs bov’s seize up on some cars in the past. You have to keep them well oiled.

You will not get a CEL, and you will only run rich between shifts.
Another tip with the RFL/H-34. Make sure you don't point it towards the hood liner, you will rip the hood liner when it blows off.

And yes, fellow stealth owners will be able to hear your BOV several car lengths ahead/behind even with their stereos thumping.

If I could do it again I would run closed loop (recirc). Must be getting old and less 'riceresque'.
Now will someone please help me find a 98/99 VR4 so I can get back into the game and do it again. lol.

[memystealthandi]

We would go for drives with 6-8 cars runing HKS, RFL, Blitz and Greddy open loop, and nobody ever stalled... I wonder how true this rumor is.

Very true rumor, if the BOV is not adjusted properly.
Like I commented on in my post above. If you are not running a stiff enough spring rate you will stall out at speed. Similar result as when the y-pipe blows off....you lose all of your power steering and braking usually right when your shifting out of 3rd gear at your highest boost level. Not fun at all.

This happened to me when I was experimenting running the H-34 open loop with the H-34 spring. The spring was about and inch and a half shorter than the RFL spring. Every 3rd gear shift I would stall out, ended up having to change it to closed loop just to get home.

[calgary_bulldog]

Thanks for the replys. I previously had a 03 mazdapeed protege and know for a fact that running a vent to atm BOV with that car(also MAF) is such a pain that it is not worth doing. Anytime you came to a stop and went into neutral from above 2500, it goes so rich that it stalls out or the CEL comes on. Very well documented problem with these cars. I tried 2 types of atm BOVs and adjusted them both and never got it to work properly on the protege. (the best thing I can say about this car is 'nice stereo') I am glad that it is not as huge a deal on the stealth. Surreal I sent you a PM. If anyone out there in Calgary is currently running a RFL or a Greddy vent to atm, it would be great if I could here it. I am looking for a plug and play out of the box vent to atm that is fairly loud but is headache free. I know it is a little corny, but hearing a great whoosh(like my 90 Miata) sounds cool to me. Thanks