Bov Problems

Started by TurboNotch · Feb 27, 2008 · 8postsInvision 2005–09

TurboNotchFeb 27, 2008, 2:50 am · #1

i got a bov with my fmic kit. the flange came attached to a pipe already, and i put it right after the turbo(only place i had room). it's u'r run of the mill Greddy knock off. i have it on recirc and the vacume fitting on top of the diafram running to manni pressure, tee'd into fuel pressure regulator vacume. i've tryed ajusting the spring but i can't seem to get it to work right. i still get compressor serge. theirs a smaller vacume port on the underside of the diafram on the bov, whats that for?

misterrickFeb 27, 2008, 3:05 am · #2

it could be partly due to its positioning. being as close to the throttle body as possible is where its most effective

bartc_jFeb 27, 2008, 5:38 am · #3

ya man it needs to be about 6-18" from the tb thats the most effecnt place for the bov, in our cars

TurboNotchFeb 27, 2008, 7:15 am · #4

thats what i was thinkin, just needed some clarification. guess i'll have to get a flange to move it.

drfts12Feb 28, 2008, 8:15 am · #5

My Greddy knock off did the same thing and not work. So I took it apart and rebuilt it and putting vasoline on the dyaphram; making it able to open and close easier and not get stuck. I put it back on a voila! You dont want to T the bov vac source. Use a direct vac source behind the tb.

Also, if it sill doesn't work, you can do the single spring mod. Just take it apart and use the larger spring.

But, my bov would seriously not work AT ALL. till i did this (IMG:style_emoticons/default/smile.gif)

IggyEGuanaFeb 28, 2008, 9:49 am · #6

misterrick @ Feb 26 2008, 07:05 PM
it could be partly due to its positioning. being as close to the throttle body as possible is where its most effective

+1 and YAY! I learned a neat trick.

TurboNotchFeb 29, 2008, 5:22 am · #7

drfts12 @ Feb 28 2008, 12:15 AM
My Greddy knock off did the same thing and not work. So I took it apart and rebuilt it and putting vasoline on the dyaphram; making it able to open and close easier and not get stuck. I put it back on a voila! You dont want to T the bov vac source. Use a direct vac source behind the tb.

Also, if it sill doesn't work, you can do the single spring mod. Just take it apart and use the larger spring.

But, my bov would seriously not work AT ALL. till i did this (IMG:style_emoticons/default/smile.gif)

thats prety kool, i'll give it a try, thanx.

TurboNotchMar 3, 2008, 2:36 am · #8

pulled one of the springs, works now for the most part, location is still wrong tho