
So i've never seen this before so maybe i invented this. So a lot of people debate over going "Blow off" vs. "Recirculated". For us MAF cars BOV means running rich when blowing off to the atmosphere. My solution is..... why not make some thing that will allow me to have both. When i want to be ricerish i can go BOV and when i want to some granny driving i can recirc it.
Here are instruction on making a ReATM Valve so that you can pop the hood and switch from BOV to recirc with out moving any hose
Tools:
Drill
Cost:
$3.99
Mat'l:
3/4" PVC Ball Valve ( make sure to pick one that open all the way properly

Note:
I'm running a HKS type2 SSQV with a custom 3/4" recirculating adapter that i made out of pvc. I'm also still running the HKS SSQV noisemaker tri-fins
Diagram

Original setup


Step 1: Close the Ball valve

Step 2: Mark spots to drill


Step 3: Drill two some <1/2" holes


Step 4: Deburr the shaving and open the valve to make sure it funcitons


Step 5: Install
Recirculated

Open to Atmosphere

Done!
Enjoy!! just remember you saw it here first

Same design can be used with any type of recirc'd blow off valve
i'm going to eventually epoxy a cone to amplify the sound
Here are instruction on making a ReATM Valve so that you can pop the hood and switch from BOV to recirc with out moving any hose
Tools:
Drill
Cost:
$3.99
Mat'l:
3/4" PVC Ball Valve ( make sure to pick one that open all the way properly

Note:
I'm running a HKS type2 SSQV with a custom 3/4" recirculating adapter that i made out of pvc. I'm also still running the HKS SSQV noisemaker tri-fins
Diagram

Original setup


Step 1: Close the Ball valve

Step 2: Mark spots to drill


Step 3: Drill two some <1/2" holes


Step 4: Deburr the shaving and open the valve to make sure it funcitons


Step 5: Install
Recirculated

Open to Atmosphere

Done!
Enjoy!! just remember you saw it here first

Same design can be used with any type of recirc'd blow off valve
i'm going to eventually epoxy a cone to amplify the sound
