On my 06 SI, I have a Tial BOV and I connected the vac line to the Intake manifold. Just like Greddy said to do. When I did that the BOV is slightly open @ idle. When I step on the gas it closes, but when the RPMS come back to idle the car struggles to stay started by pulsing between 400rpm to 800rpm. I disconnected the vac that goes to the fire wall and I lost my brakes in the drive way. The break pedal went stiff. Before I lost the breaks it worked but I still had a small compressor surge and then the BOV worked. What would cause that problem?(a leak maybe??) I tried reseting the ECU and nothing the same thing happened when I reconnected the vac line to the fire wall.
I am wondering if anyone knows anything that I can do to fix this???? Thank you

Jupe


Modified by Jupe at 9:45 AM 7/8/2007


Modified by Jupe at 2:14 PM 7/8/2007

 

being open at idle is normal.

you can go to tialsport.com and look at their tech page to see what spring that valve takes according to engine vacuum produced. BUT if you go too tight, it wont open.

http://www.tialmedia.com/docum...p.pdf

 

the default psi is 11. It opens just fine and sounds great, but when the it goes back to idle it pulse and almost dies. It did die twice on me, once while I came to a stop and once in the garage. I have a slight compressor surge still at the begining of the pressure release. I have the vac line on the manifold. So I am using the right one. I don't know why it is giving me such problems????

Jupe

 

being open at idle is normal.
unless you run a bigger spring, at which you will run into a little surge. call tial and talk to them, they were very helpful.

and vacuum is measured in mm/in of hg not pressure.