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Blitz Super-Sound Blow-Off Valve DD (Dual Drive)

Blitz Super-Sound Blow-Off Valve, Installed

The Blow-off valve is essential to all turbocharged vehicles. The purpose of the BLITZ® Blow-off Valve DD is to relieve compressor surge without reducing compressor speed. It controls boost pressure that is built up by the turbo and vents it into the atmosphere when the car is not under load (in between shifts). This prevents pressure from backing up into the compressor housing, causing the turbo impeller blade to rapidly stop or even worse, to spin backwards (compressor surge or backspin). Doing so can be potentially destructive to the turbine wheel and shaft. Repeated stress over time can cause eminent damage to the turbo charger and eventually lead to turbo failure. A blowoff valve is actuated by pressure changes only, ensuring quick valve responses and complete closures at idle. The BLITZ® blow-off valve not only improves performance and response, but also increases the life of the turbocharger.

If you like this you will also dig the new Blitz Super-Sound Blow-Off Valve VD (Venturi Drive).

FEATURES
  • DD (Dual Drive) for maximum response (small port for low boost + larger port for high boost)
  • Includes mini SUS filter
  • Urethane gasket to ensure complete seal
  • Tension adjustable
  • Holds to 1.2 BAR (18psi)
  • Available hard spring for high boost applications
BLOW-OFF VALVE KIT
Blitz Super-Sound BOV Kit Example
Orders over $150 ship FREE!
Part # Year/Model Price  
70047 Blitz DD BOV Kit - Toyota MR-2 SW20 1990-95 $249.20
70052 Blitz DD BOV Kit - Toyota Celica All Trac Turbo ST185 1991-95 $249.20
70044 Blitz DD BOV Kit - Toyota Supra TT JZA80 1993-98 $249.20
70041 Blitz DD BOV Kit - Toyota Supra T MA70 1986-92 $249.20
70024 Blitz DD BOV Kit - Nissan Skyline GT-R R32, R33, R34 1990-01 $402.00
70010 Blitz DD BOV Kit - Nissan 240SX S13 (SR20DET only) 1989-93 $249.20
70023 Blitz DD BOV Kit - Nissan 240SX S14 (SR20DET only) 1995-98 $249.20
70090 Blitz DD BOV Kit - Mazda RX-7 FC 1989-92 $249.20
70091 Blitz DD BOV Kit - Mazda RX-7 FD3S 1993-95 $249.20
70071 Blitz DD BOV Kit - Mitsubishi Lancer Evo. 7 & 8 2003~ $249.20
70071A Blitz DD BOV Kit - Mitsubishi Eclipse 1995-99 $249.20
70073 Blitz DD BOV Kit - Mitsubishi 3000 GT 1990~ $249.20
70086 Blitz DD BOV Kit - Subaru Impreza WRX 2002-2004 $249.20
70087 Blitz DD BOV Kit - Subaru Legacy GT BP5/BL5 2005~ $249.20
70088 Blitz DD BOV Kit - Subaru Impreza WRX 2005+~ $249.20
Universal Blitz DD Blow-Off Valve & Accessories
70039 Blitz DD BOV Kit - Universal $186.00
70997A Blow-Off Valve Hard Spring $16.00
70995A Blow-Off Valve Standard Spring (New part number, supercedes 14074A) $16.00
ZZ3004 Recirculation Flange - Works great on EVO, Impreza, and S13/S14. $25.00
Soldout!
ZZ3001 B.O.V. Steel Flange $20.00
ZZ3002 B.O.V. Aluminum Flange $25.00
73262 Blow-Off Valve Elbow $20.00
70994 Bov DD Sus Filter $35.00
16422 Blow-Off Valve Gasket $5.00




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