I just like to post a question regarding the Tomei B/off valve. Is it normal that when you bring your vehicle to 5.5k rpm onwards, you can't hear the b/off sound? It sounds really obvious at 4k-5k rpm. Please advise...... Thanx!

 

is there a screw on it? cause i had a apexi bov on my eclipse that you had to set to the boost you were running. sounds like your bov is blowing off when 18-19 psi is reached

 

There's no screw.... According to the mehcanics, Tomei b/off is almost the same (looks the same to me) but the valve is stronger. I was going for a HKS but he advised me against it, saying the car stalls easily.