can i plug this up? it makes a horrible noise up too and below 3200rpm... it looks to me to be part of the air pump assembly....


also, what do i do with this second stock bov? just leave it be? i have a apexi bov where the other one was...

 

Don't plug it (unless your airpump is removed). It relieves the excess air from the airpump. Add a hose onto it with some restriction at the end of it to help muffle the sound.

You can leave it vented. It's annoying as hell so I would recommend connecting a hose and routing it down towards the ground inside the engine bay to help reduce/remove the low rpms hissing.

 

well i added a hose to the air pump relief tube, and stuck my stock bov in backwards to try to muffle the sound... didn't work.. just made it hight picked and crappier sounding.. that thing sounds like a tug boat,,,,, i need to do something about it

 

https://www.rx7club.com/showthread.p...t=sound+muffle

 

When I removed my airpump I had the same 'dying cow' noise. Plugged up the hoses and it all went away.

As Mahjik said, don't plug them unless your airpump is disabled/removed.

 

i will try the SOS pad thing.... looks simple... thanks for the links...

 

if you put the stock bov on backwards I still don't think it will allow air to pass through but I don't have one here to check.

I thought that for air to pass through it on either end it had to have vacuum applied to the small nipple.

You could also go buy one of those tiny air filters and try that out instead of rigging it

 

Can you say

MOOOOOOOOOOOOO MOOOOOOOOOOOOOOO

 

Yeah.. it won't allow air to pass if you put in on backwards. But then you are essentially running without a blow off valve.. which is very bad. It's there for a reason remember?

 

That's debatable. Many people choose not to run a BOV, without any ill effects. It also helps responce after shifting since you won't "bleed" off all the built up pressure (boost). However, i'm not sure how the factory twins would hold up to this.

https://www.rx7club.com/showthread.p...ight=no%2A+bov Look for the post by RICE RACING.

-Alex

 

or you can jack the air relief valve "muffler" from an fc. i'm sure you can find someone who will just give you one.

 

Ok.. well I don't think that the prespool relief valve can be removed and still have a functioning sequential system. At least my car ran like crap when mine blew off. (No boost in first and second gear.. but third was ok? idk.. strange things happened).

 

Back in the day, when I was still running an airpump, I used a lawnmower muffler to quiet the MOOOO sound. Worked quite well. It was also a really good conversation starter (why the hell do you have lawnmower parts in your engine bay??).

-Rob

 

HAHAHAHAHAA..

home depot racing

 

ok hahaha holy ****! is that stock bov the reason i moo more than a field of cows?? i heard of the intake moo but i have the anti moo pellet or whatever the hell that is.