BOV Recirculation

[sandersb]

I'm buying a new Greddy RS BOV in a few days and I was wondering 2 things:

1. What are the up's/down's of recirculation?

2. Where does the blowoff recirculate to?

Thanks

[IDriveFords]

Ups: Recircing the BOV will get rid of that annoying bogging when you start to slow down and stop. I've heard but I'm not sure that it will take care of some of the backfiring problems you get with turbo cars. It probably gives you a very very very slight power gain considering your putting more air back into the intake but it isn't even worth mentioning so don't read this last sentence... too late you already read it.

Downs: You won't get the cool WHOOOOOOOOOOOSH! sound every time you shift.

When you recirc the bov I'm pretty sure you can do it anywhere after the MAF but I think most people just recirc it back into the hotpipe.

[sandersb]

Haha thanks Fords

[uberkillerz240]

UPs. helps with your a/f ratio. after shifting, you wont be running rich because you wouldnt be dumping the air out of the system after the MAF measures the air. This measured air is supposed to stay in the "closed system". This helps when you are trying to pass emissions. I also heard it helps to spool faster. not sure on the last 1.

If you recirculate it, make sure you do it after the MAF, as Ford said.

[Thoughtful_One]

Downs: You won't get the cool WHOOOOOOOOOOOSH! sound every time you shift.

Well, I wouldn't say that's completely true. With my stock SR, including the stock SMIC and BOV, I can still hear a small whoosh when I back off the throttle.

I would imagine that recirculating that Greddy would still be fairly loud with only a 4-5" tube running to the intake tube.

[inkslingers13]

Quote »=When you recirc the bov I'm pretty sure you can do it anywhere after the MAF but I think most people just recirc it back into the hotpipe.[/quote]

if you were to dump air into the hot pipe that would be horrible! it would be like not running a bov at all, it needs to dump into the intake tube, witch keeps the turbo at a bit of boost between shifts. in the long run its better to recirculate, but then you give up the cool back fires between shifts and FLAMES! so its all a personal reference... good luck

[Emperor_Tha]

Ups:

Downs: You won't get the cool WHOOOOOOOOOOOSH! sound every time you shift.

e.

Greddy rs bov is still loud enough to turn head even when its circulated. At low boost it makes a flutter noise like chu chu

[IanS]

Greddy rs bov is still loud enough to turn head even when its circulated. At low boost it makes a flutter noise like chu chu

That flutter noise is compressor surge, not the BOV noise. My type S is recirced and its loud.