bov opinions..(quick kill).. and update

[turbo2nr]

so im buying a bov, i'm most likely getting a hks super sequencal bov. any opinons? its gona cost me about $150 .. any comments.. it should be decient on my car b/c its auto so i wont loss boost inbetween shifts.. so ill only run rich when i let off..

killed a civic, a 96 w/ intake not worth talk about...

car problems are fixed finally, it was a crimped vacume hose, i turned the boost down to 9-11psi, i see 11psi in 3rd, 9 in first, and 2nd flucates between 9-11..

well so far so good, next lstep is to do a comp test and ill take it form there, if every thing goes well, ill do a 255in tank, adj. fuel pressure reg, 8.5mm wires, take off my cat, get a chip, and boost 16psi..i forgot the bov, that going on b4 the comp. test

hope the comp test goes good.

[RACER D12]

Guess buying a GSX is on hold then?

[CBFryman]

better idea...diverter vualve...your car is MAF sensor regulated isnt it?

[turbo2nr]

yea gsx is on hold untill funds get higher.. and the maf is regulated so its pushes more fuel when it reads that air is lossed..that sucks..
1

[CBFryman]

That BOV may or may not be able to be made int oa diverter vualve. a diverter vualve vents excess pressure Pre turbo post MAF sensor. that will keep your air fule ratios in check...

Edit:
That is opposed to a simple BOV which vents excess pressure into the atmosphere. whihc will leave air the MAF senced un accounted for in the exaust.

[Neutrino]

CBFryman is correct if your car uses a MAF use only a diverter valve. Many aftermarket BOVs can be converted as both diverter or blow off and I think the same its true to the HKS sequential.

[crunchymilk55]

trust me, dont vent to the atm with a MAF car. I did, for 2 minutes.

[Hypsi87]

LOL sneeze valves are overrated. Espically when you run a big shaft TE-63 turbo.




J/K, small turbochargers and sticks, where you are constantly surging the compressor, is a good thing.

If your car in an automatic, just let it blow off. no need to route it.

[turbo2nr]

YEA I KNOW i dont have a big turbo and im getting the hks ss for 120 its dirt cheap.. but i dont know it will run wierd if i dont re-circulate.. damm decisions..
1

[Igovert500]

http://johnmonnin.netfirms.com/BOV.html
this link is an independent comparison of BOVs...mostly stuff you already know, and it is done within a 3000gt context...but I thought I'd post it for whatever reasons.

Also, doesn't HKS sell a recirculating kit for their BOV, you could always get that afterwards if you find you are running too rich. I'll try and find a link...

Edit: I found a link that confirms there is a recirc kit for the HKS SS.
http://www.serioussolutions.com/evo/hks_ssqv.htm this guy got it for an evo, and said it only cost $40. This link is almost OVERLY informative...he is sooo detailed. So perhaps something there will help you or someone else down the road as well.

[turbo2nr]

hey thaks alot its really useful,it doesnt sound ot great on the evo with the re-cir. kit on but ill see how the car runs.. im doing it tho, im also getting a hard pipe made 2" form the compressor to the intercooler, its gona be mild steel and the bov is gona be attached to it, when i do it ill post pics and maybe a vid..
thanks agian
1

[crunchymilk55]

PLEASE TRUST ME

Running the BOV vented to the atm on a MAF-censored car is an awful thing to do. I bought a BOV knowing that it "might" have a difference in performance. First, I put it in vented, the car ran like shit. The idle was real rough, and it kept almost dying, then everytime u boost, the engine stalls when you let off. I recirculated it after 2 minutes.

Yeah, it might not be as bad on your car, but there WILL be a performance difference, whether you see it or not. Losing time for a cool sound, and yes I think it's badass, is really not worth it. It only hurts ur car in the long run.

[1QUICK2]

I dont know why you guys have a problem with atmosphere venting. I have a MAF car with with a Greddy type-s and i have never had a problem. Doesnt loose boost between shifts, sounds cooler, and has never stalled on me...if you a/f is turned like you say, or if you have some kind of control, you can correct the rich spot between shifts. Actually the only thing it did was help the car shoot flames on occation. But if i could do it again i would deff go with the SSQV.

[Neutrino]

As posted over and over the fact is that MAF and atm venting BOVs should not mix. Yes in some cars it migt not hurt performance as bad, or you can tune to compensate.


But why do something improper then waste your time trying to correct it? Just so you can hear a louder pssss?


Do it right from the start and get a recirculating one.

[TatII]

for some reason, the MR2's run them perfectly. the only time you will ever notice is when your road racing and your doing part throttle. then the car would slightly stumble. but street driving you would never notice. my friend Hondachili's MR2 T has a RFL vented to atmosphere and the car drives beautifully. the car originally belong to my boss who went roading racing in Lime Rock, and that is what he said, the only time he felt it hesitate is part throttle there. but when i drive it around town, i couldn't even feel any performance loses. and the MR2 doesn't use a hotwire MAF. it uses a Flapper style air flow meter. i don't know how much that would effect it though.