Nissan 370Z Forum - View Single Post - [supercharger] is this the right hose setup for BOV and gauge

TopgunZ · 05-16-2016, 01:51 PM

So is the air bypassing the system? Yes? Bypass valve.

Is it only needed to blow off after the system is under pressure? Yes? Blow off valve.

There is a huge difference. Bypass valves are open during idle and out of WOT to bypass the air away from the throttle bodies so the engine is not ingesting forced air when it does not need or want it. Blow off valves are shut during idle.

By your BPV "leaking" at idle it is doing what it is designed to do. If you had a turbo and a BOV and it was leaking at idle then you have serious problems.

05-16-2016, 01:51 PM	#7 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6833	So is the air bypassing the system? Yes? Bypass valve. Is it only needed to blow off after the system is under pressure? Yes? Blow off valve. There is a huge difference. Bypass valves are open during idle and out of WOT to bypass the air away from the throttle bodies so the engine is not ingesting forced air when it does not need or want it. Blow off valves are shut during idle. By your BPV "leaking" at idle it is doing what it is designed to do. If you had a turbo and a BOV and it was leaking at idle then you have serious problems. __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM Last edited by TopgunZ; 05-16-2016 at 01:57 PM.