BLITZ BOV, surge
 

I just installed a used Blitz Super Sound blow off valve. Now I have a problem with compressor surge. The problem is usually at lower rpms at lower boost levels. ILl let off the gas and the BOV wont open until it sees more than 15 in HG vacuum. Now I disaambled the BOV, cleaned it and greased it up. The problem got better but now its back again. At higher boost/rpms levels, no surge.
But at lower rpms, I get a fttt tsssh like I hear the compressor surge, then the bov opens. at really low rpms when no boost is built the compressor surges and the bov doesnt even open.
I tried adjusting it (less tension) and its better, but still surging.
The only think I can think off is either the BOV doesnt have a strong enough vacuum source (its teed off my FPR) but it never did this with my DSM.
I was thinking of shortening the bov spring until the bov opens under vacuum at idle like my dsm did, or machine a groove into the brass valve and install an o-ring to prevent any leaks within the BOV. Any ideas?

Re:BLITZ BOV, surge
 

Im pretty sure you should take that T off of the FPR

Raises fuel pressure does it not?

Re:BLITZ BOV, surge
 

I'd try a new vac source first but those Blitz bovs don't like to open a low boost. My buddy's doesn't open under 4-5 lbs.

Re:BLITZ BOV, surge
 

is this slight surge ok for the turbo?

Re:BLITZ BOV, surge
 

Slight surge is fine.....I still get it with my Greddy. It's hard to find a sweet spot since you don't want it to leak but want it to open up also.

Re:BLITZ BOV, surge
 

HKS is held closed with Pressure, and opens with vac... I love it.

Re:BLITZ BOV, surge
 

1G DSM bov= No Surge

Re:BLITZ BOV, surge
 

FPR is not a strong enough vac source, FYI

Re:BLITZ BOV, surge
 

what shoudl I use?

Re:BLITZ BOV, surge
 

Ahh man that means im gonna have to redo my vacuum lines. >:(

Re:BLITZ BOV, surge
 

T off the ocv and charcoal emissions. these are the thicker hosses on the manifold. not the fpr!it fucks up the fuel pressure. and take that factory sticky grease out of the bov and lube it with silicone oil. it's the best. if it stil has compressor surge, cut off a coil from the spring.

Re:BLITZ BOV, surge
 

I know this isn't directly related... but does anyone have a chart of sorts for routing vacuum lines? 14b on a d-series and it has a 1g dsm bov. I wanted to know how to route for wastegate, bov, and a turbosmart mbc.

Thanks for any info that can be shot my way.

Re:BLITZ BOV, surge
 

I have mine tee'd off the brake booster to a vac mani
http://www.members.shaw.ca/djfob/vacmani.JPG

Re:BLITZ BOV, surge
 

a little surge is fine. if you want to get rid of the surge you need to loosen the bov. do not cut the spring. this will make it stiffer.

Re:BLITZ BOV, surge
 

step 1: don't t off the fpr....like everyone else said, it's not a strong enough source, and your fuel pressure gets fucked up.
step 2: get a vacume manifold and use that
step 3: hks ssq. u'll be much happier