greddy type s bov extra inlet?
#2
Junior Member
Join Date: Mar 2007
Location: Ft Lauderdale, Fl, USA
Posts: 153
Likes: 0
Received 0 Likes
on
0 Posts
Re: greddy type s bov extra inlet?
you can leave it off I have mine reading atmospheric. I have a vacuum line hooked up the the one in the middle and the one below it I have open. ive heard some people hook another vacuum line up to that if your valve is flutter but that usually can be fixed by loosening or tightening it.
#3
Honda-Tech Member
Join Date: Jan 2005
Location: b00sting my D16s, SoWis, USA
Posts: 7,015
Likes: 0
Received 7 Likes
on
5 Posts
Re: greddy type s bov extra inlet?
Now if you had searched.... j/k
THe lower port connects the lower half of the diaphragm to boost (pre-throttle body). When you let off throttle, vac is introduced above, and boost remains below. The valve is opened faster, and with less boost. This helps with flutter and momentary compressor surge, but at the expense of holding higher boost. It should be a non-issue, since originally Greddy recommended to use the Type-R BOV above ~15psi anyways.
It can also help with keeping it closed at idle ever so slightly, since the FMIC's pressure drop can create an ever-so-slight vacuum in the charge pipes, which holds the valve closed a fraction farther. Enough to theorize about, but not enough for practical use...
THe lower port connects the lower half of the diaphragm to boost (pre-throttle body). When you let off throttle, vac is introduced above, and boost remains below. The valve is opened faster, and with less boost. This helps with flutter and momentary compressor surge, but at the expense of holding higher boost. It should be a non-issue, since originally Greddy recommended to use the Type-R BOV above ~15psi anyways.
It can also help with keeping it closed at idle ever so slightly, since the FMIC's pressure drop can create an ever-so-slight vacuum in the charge pipes, which holds the valve closed a fraction farther. Enough to theorize about, but not enough for practical use...
Thread
Thread Starter
Forum
Replies
Last Post
hotimportcrx
Forced Induction
8
06-09-2005 10:03 AM