FAQs » Compressor Valves: BOV/DV/Radial R35/R55 (29)

Atom Feed Frequently Asked Questions

Parent Categories

FAQ Home

Sub Categories

Blow Off Valve (18)
Diverter Valve (7)
DV002 (1)
R35 (Radial R35 Valve) (1)
R55 (Radial R55 Valve) (0)

Category: Compressor Valves: BOV/DV/Radial R35/R55

Page 2 of 3 -  Previous 1 2 3 Next All Page: Items per page:

Individual Throttle Body Engine (ITB): Why won't by DV/BOV open?


If your engine is equipped with individual throttle bodies, you will need to make sure that the vacuum source you are using for the BOV/DV is NOT sourced from only one runner/cylinder.  Sourcing vacuum from only one runner will not have a high enough resolution for the actuating force needed to control the BOV/DV.

You will need to connect all 4 or more cylinders to a common tee, manifold or distribution block in order to get a proper actuating signal.  In most factory ITB configurations, there is a balance tube that connects all four intake runners, you should tap into this common port to use with your BOV/DV.

In some instances, I4, V6 and V8 engines with a common throttle body will also experience this same type of problem if the vacuum signal is sourced from only one intake runner instead of a common volume such as the plenum. 

Author: Peter Medina

Is it okay to run two dedicated vacuum lines for the BOV/DV?


Is My BOV/DV/R35/R55 Kit Missing Components?


My BOV leaks at idle or low load situations!


My BOV/DV/R35/R55 is open at idle, what does this mean?


My stock or XXX brand BOV had only 1 port going to vacuum. How do I connect the 2 ports on my BOV to my engine?


My valve opens after X amount of boost, how do I keep it closed?


Proper Boost-Leak Test Procedure


SB & DV Adapter Flanges Compatibility List


Things to Know Before Purchasing a Synapse Compressor Valve

Page 2 of 3 -  Previous 1 2 3 Next All Page: Items per page:
Show ALL Answers  |   TOP   |  Back   |  Atom Feed
Click the question to reveal the answer, click the question once more to hide.

Company, Business and Organisation names used in these FAQs may be trademarks of their respective owners.

Please Wait!

Please wait... it will take a second!