blow off valve
#21
12-05-2008, 08:36 AM
You have a variable vein turbo (VVT) , it's kind of redundant. 
You will only make 21-23psi and the computer will not allow you to go any further. It is totally different than a wastegated turbo system. Now if you use EFI Live to boost your turbo to...say 35 psi and have a blow off valve set at 30, you might achieve that 'cool' factor you want, but...
nevermind.
You will only make 21-23psi and the computer will not allow you to go any further. It is totally different than a wastegated turbo system. Now if you use EFI Live to boost your turbo to...say 35 psi and have a blow off valve set at 30, you might achieve that 'cool' factor you want, but... nevermind.Your confusing a Blow Off Valve with a Wastegate. They function differently and do different things. A wastegate controls turbine speed(and therefore boost) by bypassing some of the exhaust gases around the turbine wheel. A Blow Off Valve vents Boost pressure to the atmosphere when the throttle is suddenly lifted, resulting in a loss of drive pressure, that would normally make the turbo "Bark".
Rollin, Look on Ebay. If you feel like fabbing up your own setup. Most of the BOV are fairly cheap. THe instead of the fancy electronic controler BD uses, Rig up a line to your exhaust so that DRIVE PRESSURE holds the BOV shut. Then when you let off the throttle and the drive pressure disappears, boost pressure will overcome the spring in the BOV and vent it out there, as opposed to out through the turbo.
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