bov problem <searched>

[180sxmonster]

i recently purchase a turbonetic bov... im running it on the cold side and a few inches away from the throttle body.... sounds and goes off at every rev but after every rev, the engine stall out and die... there is a small nipple close to the top of the bov, where i hooked up the vacuum from the fpr that is also t-ed off for another vacuum.... also there is another larger nipple on the turbonetic bov... if i hook up any vacuum to that, the bov wont sound....

i havent tried to recirculate the bov back to the intake arm but is there any other way i can run it open....???

ive read about the greddy -s but i also opened up my bov and it only has one spring.... any help would be great....

also running 10psi with the bov open to soft all the way... any suggestions would be great....thanks

[S13FASTBACKSR]

with the bov open to soft all the way

thats the problem right there. the spring is too soft. tighten it and your engine will no longer die out when letting off of the gas. also run the vac hose for your bov straight to a TB nipple, dont T it off with anything else. also remember not to use the lowest nipple on the TB

[srpowered240sx]

you need to recirculate or it will drop idle after hard revs. its just running too rich after losing all that air and already compensating with fuel. apexis safc or safc2 will fix your problem with their decel air mode. otherwise, learn to feather the throttle if you are gonna let off that hard.

[S13FASTBACKSR]

you need to recirculate or it will drop idle after hard revs.

I agree that could be the case but its also a good possibility the spring is to soft, seeing as how you have it set the lowest it can go. i have had a couple of different bov's and i had your problem. i tightend the spring and the problem was solved. if that doesnt work then try recirculating it. btw what is the pro's and cons of having the bov on the coldpipe?

[srpowered240sx]

I agree that could be the case but its also a good possibility the spring is to soft, seeing as how you have it set the lowest it can go. i have had a couple of different bov's and i had your problem. i tightend the spring and the problem was solved. if that doesnt work then try recirculating it. btw what is the pro's and cons of having the bov on the coldpipe?

word, i still think it will have an falling idle problem, but maybe not so much as to stall. try tightening it up and see how it performs.

ive heard that having the bov on the cold side will keep the compressed air flowing in one direction even when the bov opens, and reduce scompressor surge even more. but dont quote me on that, im not 100%.

[180sxmonster]

i tightened the screw and the car doesnt stall out anymore but the engine still dies everyother time when i let off the throttle and hold the clutch.... but i guess thats because i dont have a 5 speed speed sensor yet... i think....causing the car to idle very low when coasting to a stop... but i guess ill have to get a speed sensor then ....

BTW thanks everyone for their inputs... you guys rock.... would of gotten loss.. thank a lot... turbo rocks....

[srpowered240sx]

i tightened the screw and the car doesnt stall out anymore but the engine still dies everyother time when i let off the throttle and hold the clutch.... but i guess thats because i dont have a 5 speed speed sensor yet... i think....causing the car to idle very low when coasting to a stop... but i guess ill have to get a speed sensor then ....

BTW thanks everyone for their inputs... you guys rock.... would of gotten loss.. thank a lot... turbo rocks....

thats not your speed sensor, thats your mass air flow telling your computer to dump a certain amount of fuel, then your bov letting the air out, and your injectors already firing extra fuel. now you have a very very rich condition while you are decelerating. it leads to stalling. you will have this problem until you change your deceleration settings with a safc, or recirculate your bov.

[180sxmonster]

hey thanks again...

[G-rails hurt]

ok, i had the same problem with both of my BOV's, heres the issue, he's right about the maf, when i took of the recirc pipe off the stock bov it did the same thing(it leaked boost too) on my S14. so when i got a FMIC kit, i also got a SSQV. same thing happened when the valve opened crappy idle like near 1-200 rpm, and cut outs. the only thing that will help you with out recirc is a HKS EIDS, this ties in with your ecu ( very simple to install) and this will smooth out the off set in the fuel air ratio, it's a $100 dollar part but it will save you a world trouble. i've had it for 6 months and it's worked perfect. this let's you eleminate the need to recirculate, and run a open atmosphere bov.