Tial 50mm BOV is compared with the Synapse Synchronic SB001 BOV. Test vehicle is a Subaru WRX with Garrett GT30R, external wastegate and running 20 psi of boost.

Clip of Tial BOV on SCed Maxima

Blow Off Valve Comparison: Tial 50mm vs. Synapse Synchronic on a Yukon Denali XL with STS Turbo Kit. Note how the Synapse BOV eliminates compressor surge.

Few short clips of my 95 GSX

Silver GT28 car isn't fully tuned yet. Both on EPL fueling. Both have ASP Full Exhaust. Both have ER Intercoolers.

Tial GT28 S4 on DB Performance Dyno

testing out my BOV

Some video clips of my WRX with a RS*R ExMag GT2 turbo back and Tial 50mm blow off valve.

Tial BOV makes mad compressor surge on my buddy's Scooby WRX running 20 psi of boost and a GT30R

TSoprano's Turbo IS300