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View Full Version : wht happens if i don't recirculate stock bpv?


supman
10-09-2003, 03:34 AM
i just wanna see how it would sound, taking off the recirculting tube. Will it be harmful, will ne screw up? i'm not gonna keep it tht way but i wanna see if it gobbles. I know if i go to neutral it would stall etc.
t3ase
10-09-2003, 03:36 AM
You won't screw anything up, there's just a possibility you'll stall out. Don't drive too dangerously until you get used to the chance of stalling.
tonkabui
10-09-2003, 03:57 AM
the turbo would blow up.









just kidding. worse case scenario is stalling, as tease has already mentioned.
Turbo Matty P
10-09-2003, 04:11 AM
it causes lag and a CEL. I know it'll cause ideling problems and the lag. I'm pretty sure it'll throw the CEL also. It's made to recirculate for a reason. It has something to do with the engine expecting that extra bit of air to be there when you go to push on the pedal again. Do a search for aftermarket BOV's. Thats where I picked this up.
supman
10-09-2003, 04:30 AM
yup, did it and it sounds AMAZING!! finally! a nice long PPSSSHHHH and no distorting gobbles, i even tried making it gobble but its didn't. But ya the stalling issue is a big problem and also felt a bit of lag. I was careful not the stall but it did, kinda scary (power steering goes out!), but no one on the roads so its fine.
t3ase
10-09-2003, 04:47 AM
You won't throw a CEL with a BOV installed, nor should it create lag.
Striker187
10-09-2003, 05:36 AM
no turkey? really? hmmm....maybe the return pipe on the injen is too small and it causes some compressor surge. but people who have vented aftermarket bovs have still gotten the turkey right? so maybe not....just a thought.
twiztedjeckel
10-09-2003, 06:08 AM
Originally posted by Striker187 people who have vented aftermarket bovs have still gotten the turkey right? so maybe not....just a thought. [/B]

they shouldn't unless they reroute the air back into the system essentially making their aftermarket bov into a better version of the stock bypass valve
Sparkz28SS
10-09-2003, 12:23 PM
...the only thing it will do is run really rich and stall like they said............ the reason is the air that is going out of the BPV has been "seen"or"read" by the MAF and the computer adds the fuel for X amount of air......let the air out and you still have the fuel....so the car goes rich when you let of the gas
Sparkz28SS
10-09-2003, 12:24 PM
...now if you move the MAF to the pressure side of the system......you can run a BOV or BPV open ...and the car will run smooth
Notorious
10-09-2003, 12:44 PM
Increasing the idle will pretty much eliminated the problem. You can read about it in the forced induction section.
Striker187
10-09-2003, 01:36 PM
i forget, who's run an open bov? and are you getting the turkey or not?
supman
10-09-2003, 01:38 PM
i'm running the stock bpv open, and no turkey.
Striker187
10-09-2003, 01:43 PM
hahaha, i read that :D ok anybody else?
supman
10-09-2003, 01:47 PM
but stalling problems, like even when completly stopped and i rev it trys to stall.
supman
10-09-2003, 01:47 PM
i'm goin to try the idle thing now.
Sparkz28SS
10-09-2003, 01:53 PM
Originally posted by Notorious
Increasing the idle will pretty much eliminated the problem. You can read about it in the forced induction section.


.....all that does is up the IAC count....it will help the car idle.......but thats not the FIX for the problem...
supman
10-09-2003, 02:19 PM
i just did it, it didn't stall, i put it in neutral and coasted and was fine. Actually there is a still a bit of turkey not enough to notice, and a little bucking when shifting.
Sparkz28SS
10-09-2003, 02:27 PM
the bucking is what I was talking about.......when you shift and the BPV opens....the ECU dumps fuel...and then you get back on the gas and it will stumble for a sec and then go.... it just gets really old after a while....
Flat Black
10-09-2003, 04:34 PM
If you disconnect your battery for a minute or so and then wait 300-500 miles, the PCM will compenstate for the fuel.
turboge
10-09-2003, 06:58 PM
I've run mine to atmosphere with the aftermarket FMIC locating the BPV exit to the other side of the intercooler..... it still makes an insanely stupid sound. I've only heard a clear "Pshhh" at like 3psi when i let my foot off the gas slowly.
Striker187
10-09-2003, 08:05 PM
so perhaps the turkey is caused by the return tube being too small and not being able to vent the pressure fast enough causing compressor surge? if people who are venting to atm are not getting the turkey, this is probably the case.
Larone
10-09-2003, 09:48 PM
I like the turkey. Still can't understand what's unlikeable about it. I'm pretty used to blow of valve sounds from other turbo cars but I like the uniqueness of the MSP. I wont be trying to find any way around this, I'll recirc, boost, get sweet sounds and run smoothly.
Good luck to everyone trying to vent.
Striker187
10-09-2003, 09:52 PM
i agree, the turkey is unique, and i for one am pretty fond of it (though when i get the money, i'm changing out to a blitz and recirculate it). but if it is compressor surge caused by the return tube, that's not what you want.
Larone
10-09-2003, 10:22 PM
True, but I don't really think it's compressor surge though. Ah well...hey, at least we got an MSP right :)