APS Twin Vent BOV review
APS Twin Vent BOV review
Just installed an APS twin vent BOV. Previous BOV was a TurboXS H34 (recirculates into the intake). I'll start with the TurboXS piece. It worked pretty well. Actually held boost (1/2-1 PSI) better than stock. However, I got occasional bucking when I let off the throttle around town. No idle issues. Can't comment on fluttering since I still run the stock airbox and cannot hear the BOV. I tried 3 adjusting washers initially. Then 2, then no washers. Same bucking effect. No install issues either - bolts right on. Clears the fan shroud fine.
Now the APS BOV. Also bolts right on. I left the spring adjustment bolt the way it was right out of the box. Drivability is like stock. Normal idle. No bucking. No surge or flutter. I use the stock airbox so it's quiet too. The atmosperic venting only occurs under full boost. "PHOOSH" is most audible when letting off the throttle at 6000+ rpm. $240 well spent.
Now the APS BOV. Also bolts right on. I left the spring adjustment bolt the way it was right out of the box. Drivability is like stock. Normal idle. No bucking. No surge or flutter. I use the stock airbox so it's quiet too. The atmosperic venting only occurs under full boost. "PHOOSH" is most audible when letting off the throttle at 6000+ rpm. $240 well spent.
Questions about the valve.....The stock hose that connects to the nipple isnt long enough...is that just me, or you have to get a new one( bought the valve used)? When installed the valve sits on its side and the nipple is pointing torwards the ground correct? thanks
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I had mine on for almost 2 months now. It awesome. Quality is great, sounds great. I have the adjustment screw out about 1/4 of an inch out. No stalls, no problem what-so-ever. In my opinion the best BOV out there.
At low RPM, it's 100% recirculated. As the revs go up (starting just before 5000) the BOV gradually vents some to the atmosphere. It never vents 100% though. Check the design on the APS website.
Originally Posted by shadow1
At low RPM, it's 100% recirculated. As the revs go up (starting just before 5000) the BOV gradually vents some to the atmosphere. It never vents 100% though. Check the design on the APS website.



