Just curious. Has anyone ever tried this? Is it possible?

 

Why?

 

I wouldn't risk a $1000 supercharger head unit to see if this is possible, just get a bypass valve from vortech or someone on here. You could damage the supercharger by creating compressor surge if the blow off valve cannot release enough air and a blow off valve doesn't work the same way as a bypass valve. I may be mistaken but I think blow off valves release because pressure builds and opens them and I know a bypass valve is opened by the vacuum created from the manifold (via a hose to the bpv) when your foot lifts off the gas.

 

Bypass and blow-off valves are synonymous.

Both release built-up pressure between the compressor and throttle body.

 

Yeah but bypass valves on superchargers are almost always releasing some amount of air even while driving down the highway in 6th gear I can hear it releasing air.

 

There is a HUGE difference between the two ... I found this link that can articulate it much better than me. Do not confuse the two ...

Below text taken from: http://wwwrsphysse.anu.edu.au/~amh11..._off_valve.htm
* Compressor bypass valve (CBV)
In the CBV case, air is returned to just after the air-cleaner - for re-use into the turbo compressor air inlet - instead of being dumped to atmosphere. The bypass valve is open (kept open by engine vacuun (against an internal soft spring) under normal low-load (vacuum) engine running conditions, and closes firmly (overcoming spring resistance) when positive (boost) pressure is present in the inlet manifold (or plenum chamber).
When on-boost and changing gear (throttle lift-off), a sudden lower pressure (vacuum) condition is created in the inlet manifold and the valve pulls open again (spring assisted), directing pressurised air from your pipework and intercooler back to the turbo air inlet.
Instead of venting the pressurised air into the engine bay for noise, your directing it back for the turbo inlet to use again and this method is quiet.

* Blow-off valve (BOV) / Vent valve
This valve type features an adjustable spring design (soft spring held in compression by preload) to keep the valve closed under idle, cruise and boost conditions (eg 0.5 bar). (If the valve was open, dust and dirt would be sucked in.)
Only at sudden throttle lift-off (eg 0.8 bar) does the valve quickly open to vent / dump the pressurised air directly to atmosphere (into your engine bay) through a specially designed orifice (and wooshtssh).


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I will add that the vortech BPV vents to the atmosphere for no good reason, you could easily route it back into the intake and quiet the system down.

 

As stated above there is a huge difference between bypass and blowoff.

 

Bad Ben. Bad Ben! If anything- they work in opposite manners. Blow Off- Hold Pressure and Release, By Pass- Release Pressure and Hold.