need help with greddy blow off valve type rs for evo 8 2003

i just got my new greddy blow off valve installed yesterday. i notice that it didnt have a nice pshhhh sound like i expected. i took it back to the installer but he said it was installed correct. so i am dissatisfied with my new blow off valve that i spent 300 dollars on it. oh and i also notice that when im driving and switch the gear back to neutral, my engine was about to die out. can anyone help my to get my blow off valve sound good and tell my why it was going to die.

can you get a picture of this installed. I would say the stalling might be because they didnt recirculate it. And the greddy type rs makes a high pitch wistle rather than an air noise. Also if you get an intake filter to replace the stock air box then the BOV will be louder. And $300 for that BOV is a total and absolute rip off. You can get  an HKS SSQV for that price.

i have a greddy rs and mine sounds like an air sound it doesnt sound like a whistle......... http://www.mitsubishiforum.com/m_43366/tm.htm

i just got back again from the mech guy and i found out that it was recirculated. it doesnt stall while im sitting idle or while i drive but when i switch to neutral while my car is in motion, the rpm would drop below 1k and sometimes it would come back to normal or either die out. is this regular or not. oh and also it doesnt blow off good like i expected. instead of blowing off air or more of a whistle, it made a sound like clunck clunck. can someone help me. will it sound much more better with the recirculated taken off. sorry im pretty new to the turbo thing but i love it alot.

maybe the spring is too tight?

can i ask why u just randomly put it in nuetral? I mean, not that cops can figure it out, but its actually illeagal to drive your car when its not in gear, at least around here it is. The only reason i could think for the stalling would be if it wasnt recirc, but you said it is so idk

sounds like it is being vented which you shouldnt be, but if it was teh BOV would be annoyingly loud.  If it isnot vented than maybe your running a stock intake and air box still cause that will kill the sound of the BOV and spool up

check to make sure that all the hoses are tight too. You might have a leak. But i would do what sebba said and check to see how tight the BOV is. You can do it yourself, Its the thing right on the top.

i actually bought the car two months ago and i bought it used. i notice there were some things under the hood that wasnt stock. maybe the first owner switched some stock parts to aftermarket parts. i was wondering what kind of blow off sound the rs bov would sound like also. as of right now, my blow off kind off sound like a pigeon makin noise. is that what its supposed to sound like. when i bought the car, it had a k&n intake on it and it does have that box on the intake. is that why it makes the blow off sound like that. would it sound better if i bought a new intake. and if i have to buy a new one, what kind of intake should i buy. thanks for all the advise. i love cars but i just dont know too much about them. oh and i was wonderin, if i was boosting at 20 toaround 23 psi, am i boosting too much. what is the safe level that i should not pass.

20psi isnt bad. 23psi is alittle on the high side. I would stay around 18 or 19 though without a tuning device otherwise youll be hitting fuel cut alot. There should be a manual boost controller in your engine bay somewhere. Once again is it possible that we can get some pics of the engine bay. That will help alot in answering all your questions. Also how many miles are on the car. Might want to check this thread out
http://www.mitsubishiforum.com/m_104128/mpage_1/key_/tm.htm#104227

my car has about almost 21000 miles on it. i was wondering if the new bov is doing any damage to my car because of the blow off sound that it makes. oh and no im sorry i dont have any pics of my engine bay right now.

if your bov is too tight and its not opening correctly that could cause compressor surge which can screw up the turbo. but i doubt your really having that big of a problem. Just try and turning it to the softer setting or see where it is set now.

yeah i am probably just worring too much. so the rs bov does suppose to sound like that instead of blowing right. oh and if i was to either install or take out the recirculation hose, do i have to take out the whole bov off and put it on again. i was just askin because there is alot of stuff thats blocking the recirculation hose and it is located under the bov so i cant reach it.

just recurculate it  and all the idle problems will go away

he already said it is recirculated. So he has something else wrong that is making it stall. But usually that is a sign that it is vented. So maybe the shop just doent know what they are doing. Thats why i wanted a picture. But anyway, leave it recirculated or youll have even more problems .

so if it was recirculated, its not even supposed to stall out right. ill get a picture as soon as i could so you can help me out why its stalling.

yea when its recirc. it should not stall out. Thats something that happens when non-recirc. And as far as what you were saying about the bov. Im sure the sound its making is probably normal

Hard i/c piping and an aftermarket intake will help in having a louder sound blow off.  The pigeon sound is, like TE stated, is compressor surge and that surge is bad at higher psi.  Stop boosting and lower the preload on the spring.

Sounds like you have a boost/vacuum leak somewhere.  Do you have a boost leak tester?  There's a how-to in the vFaq on how to make one.

List your mods for us so we're not chasing a factory bug if we should be chasing a modded bug, if you would please.  That will help us help you with your boost setting too.  18-19+ is just way too high IMO, for a stock car, but it would help us "see" the car with a mod list. 
Take pics of things that don't look stock and if you aren't sure...definitely take a pic.

hey guys i just got back again from the mech guy. he did check out why my engine keeps on stalling. he did said that there was a boost leak and he did fix the problem. well however, when he reinstall the rs bov my car would still have the same stalling problem. he adjusted probably about 3 to 4 times to make it harder. after that my car would still be stalling. and yes the bov is recirculated. so what the guy told me was he'll get me an appointment tomorrow to go to another motorsports shop and theyll do a dyno test on it and see what was wrong. oh and probably a stupid question but i havent dyno test any car before. is it bad, will it make my motor blow. sry i suck at cars. thanks guys for all the advise. ill get back tomorrow and tell if the problem was fix.

Is there a check engine light on?>

quote:

ORIGINAL: silvercoupe97

  18-19+ is just way too high IMO, for a stock car, but it would help us "see" the car with a mod list. 
Take pics of things that don't look stock and if you aren't sure...definitely take a pic.

not on an evo. Those already run that right out of the factory. Not that it really holds that boost to redline. But it spikes around there i believe

when they first install the rs bov, the check engine light didnt come on. but after my car keeps on stalling, this one time when i turn my engine back on, the check engine light did came on. it came on for a while and it didnt go off for like the whole day. but when i went to work later that night, the check engine light was gone. will my car be ok or would you recommend me to have it check out.

Next time the light goes on bring it to autozone and have them check the code

quote:

ORIGINAL: silvercoupe97

Hard i/c piping and an aftermarket intake will help in having a louder sound blow off.  The pigeon sound is, like TE stated, is compressor surge and that surge is bad at higher psi.  Stop boosting and lower the preload on the spring.

Sounds like you have a boost/vacuum leak somewhere.  Do you have a boost leak tester?  There's a how-to in the vFaq on how to make one.

List your mods for us so we're not chasing a factory bug if we should be chasing a modded bug, if you would please.  That will help us help you with your boost setting too.  18-19+ is just way too high IMO, for a stock car, but it would help us "see" the car with a mod list. 
Take pics of things that don't look stock and if you aren't sure...definitely take a pic.

2005-2006 EVOs run 20.5 PSI from the factory the 2003-2004 EVOs run 19.5 and taper to 16 from the factory

just got back again from the motorsports shop. well they figured out why my car keeps on stalling now. they said the rs bov had something wrong on the discharge. well i dont know if its good news or bad news but the guy said he was going to return the greddy rs bov back and trade it for a hks bov. will the hks bov be better.