V2 with BOV fluttering issues.
V2 with BOV fluttering issues.
Hey guys,
I have a greddy BOV that comes with 2 springs, had to remove the hardest spring and pretty much adjust the BOV to its lowest setting so it could vent properly. Once I got that going at cruise speeds the BOV will "flutter" like its being sucked in and then held open by the vacuum. Its really annoying to hear it flutter.
So a buddy had a sequential BOV and he claims there isn't a spring in it or what not but again the BOV flutters.
How do you guys manage with a BOV on a supercharged system. I just want it to stay open to vent which it does at idle but when your cruising its annoying...
Maybe the vacuum source I'm giving it is weak? Should I get it from the TB?
I have a greddy BOV that comes with 2 springs, had to remove the hardest spring and pretty much adjust the BOV to its lowest setting so it could vent properly. Once I got that going at cruise speeds the BOV will "flutter" like its being sucked in and then held open by the vacuum. Its really annoying to hear it flutter.
So a buddy had a sequential BOV and he claims there isn't a spring in it or what not but again the BOV flutters.
How do you guys manage with a BOV on a supercharged system. I just want it to stay open to vent which it does at idle but when your cruising its annoying...
Maybe the vacuum source I'm giving it is weak? Should I get it from the TB?
Last edited by OC_Nooby; Sep 4, 2010 at 09:02 AM.
I was reading KennBell's SC articles online, and they mention the use of BOV is not reccomended.
Essentially a BOV on a turbo flutters(intentionally), as it releases the charged air is steps. Each flutter releases charged air and then closes a bit and then releases the more in the next... "flutter". This way the turbo can keep spinning (somewhat) using the exuast gas. This reduces turbo lag, spool time between say shifts.
a BYPASS used on an SC setup such as the vortech ... and bosch black gheto thing releseases all the air in one shot because the SC is spun by belt and doesnt need the BOV to help maintian the spinning. Also using a BOV is not reccomended casue every "flutter" causes like a "surge" or a "shock" to the SCer.
Some people do use BOVs on SC with success, BUT i think some BOV's release compressed air in one shot and some do it in increments "flutter".
Have you tried the regular bosch one?
OKAY so after reading the OP again.. I realized your not talking about what i mentioned above which pretains to the venting when off throttle.
Your prob most likely is the ref. line. Where are you getting vac. line from? Should it not be post TB?
How much PSI are you pushing? what kind of spring are you using?
Essentially a BOV on a turbo flutters(intentionally), as it releases the charged air is steps. Each flutter releases charged air and then closes a bit and then releases the more in the next... "flutter". This way the turbo can keep spinning (somewhat) using the exuast gas. This reduces turbo lag, spool time between say shifts.
a BYPASS used on an SC setup such as the vortech ... and bosch black gheto thing releseases all the air in one shot because the SC is spun by belt and doesnt need the BOV to help maintian the spinning. Also using a BOV is not reccomended casue every "flutter" causes like a "surge" or a "shock" to the SCer.
Some people do use BOVs on SC with success, BUT i think some BOV's release compressed air in one shot and some do it in increments "flutter".
Have you tried the regular bosch one?
OKAY so after reading the OP again.. I realized your not talking about what i mentioned above which pretains to the venting when off throttle.
Your prob most likely is the ref. line. Where are you getting vac. line from? Should it not be post TB?
How much PSI are you pushing? what kind of spring are you using?
Last edited by HomerMAC; Sep 4, 2010 at 08:14 AM.
have you tried a different brand. or were both the bov you tried the same greddy one.
try the BOSCH one that came with the SC. see if it responds similar or try a dedicated vac. line for the BOV.
I havnt really heard anyone using the greddy. why net the vortech mondo or whatever. Its meant for SC and it will work out better (personal opinion).
try the BOSCH one that came with the SC. see if it responds similar or try a dedicated vac. line for the BOV.
I havnt really heard anyone using the greddy. why net the vortech mondo or whatever. Its meant for SC and it will work out better (personal opinion).
might sound stupid... BUT... have you tried a new hose for the vac ref. line. Once I had a vac prob and turned out there was abit of silicone in the vac line that was clogging it up. and well the vac. ref. was all out of whack...
I was reading KennBell's SC articles online, and they mention the use of BOV is not reccomended.
Essentially a BOV on a turbo flutters(intentionally), as it releases the charged air is steps. Each flutter releases charged air and then closes a bit and then releases the more in the next... "flutter". This way the turbo can keep spinning (somewhat) using the exuast gas. This reduces turbo lag, spool time between say shifts.
a BYPASS used on an SC setup such as the vortech ... and bosch black gheto thing releseases all the air in one shot because the SC is spun by belt and doesnt need the BOV to help maintian the spinning. Also using a BOV is not reccomended casue every "flutter" causes like a "surge" or a "shock" to the SCer.
Some people do use BOVs on SC with success, BUT i think some BOV's release compressed air in one shot and some do it in increments "flutter".
Have you tried the regular bosch one?
OKAY so after reading the OP again.. I realized your not talking about what i mentioned above which pretains to the venting when off throttle.
Your prob most likely is the ref. line. Where are you getting vac. line from? Should it not be post TB?
How much PSI are you pushing? what kind of spring are you using?
Essentially a BOV on a turbo flutters(intentionally), as it releases the charged air is steps. Each flutter releases charged air and then closes a bit and then releases the more in the next... "flutter". This way the turbo can keep spinning (somewhat) using the exuast gas. This reduces turbo lag, spool time between say shifts.
a BYPASS used on an SC setup such as the vortech ... and bosch black gheto thing releseases all the air in one shot because the SC is spun by belt and doesnt need the BOV to help maintian the spinning. Also using a BOV is not reccomended casue every "flutter" causes like a "surge" or a "shock" to the SCer.
Some people do use BOVs on SC with success, BUT i think some BOV's release compressed air in one shot and some do it in increments "flutter".
Have you tried the regular bosch one?
OKAY so after reading the OP again.. I realized your not talking about what i mentioned above which pretains to the venting when off throttle.
Your prob most likely is the ref. line. Where are you getting vac. line from? Should it not be post TB?
How much PSI are you pushing? what kind of spring are you using?
If adjusted correctly, there should be little to no compressor surge.
When I had the Tial BOV, which wasnt adjustable I would get a bit of compressor surge while cruising. Now that Im using the Vortech Mondo it is now gone.
On our superchargers, once a certain amount of boost is created and its recommeneded to use a vent to atmosphere (BOV) versus a bypass valve.
If adjusted correctly, there should be little to no compressor surge.
When I had the Tial BOV, which wasnt adjustable I would get a bit of compressor surge while cruising. Now that Im using the Vortech Mondo it is now gone.
If adjusted correctly, there should be little to no compressor surge.
When I had the Tial BOV, which wasnt adjustable I would get a bit of compressor surge while cruising. Now that Im using the Vortech Mondo it is now gone.
BTW sent you a PM .. just now.. thanks for all your help in the past flava flav..
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