I don't like mine cause it takes the boost away when shifting. Are there blow off valves that regulate the air leaving to keep it at 15 psi or do i have to go with a recirculating setup?

hehe, thats what they are suppose to do..

i could clog my BOV or something so it doesnt release the pressure and then sell it to you https://www.nopistons.com/forums/pub...IR#>/smile.png.



kevin.

that pressue i thought hits the compressor wall and hurts the turbo thats why it is realeased (thats what i came to the conclusion that it does at least i dont know half of what some other boyz in here do)

You are correct, it's called compressor surge. When the throttle plates slam closed, the compressed air hits the compressor wheel and forces it against the compressor housing.

Its called a dump valve for a reason sonny boy

there is a way around this, you can keep 15 psi at the turbo all the time, just keep the gas mashed to the floor, and grab gears, for get the clutch, forget getting off the gas just mash them until you get where you want to be :P I don't believe the transmission will last too long, but you will keep your 15psi of boost.

im using a blitz BOV and i like it better than stock cause it lets me get into boost faster...



hte old one took tolong to reliease the pressure so it would slow down th compresser wheel this this one dumping all the air fast before it can slow down the compresser wheel i can get into boost faster







BTW what do you have done to the motor that your running 15 PSI?

Well, if you open the valve when the pressure increases and close it when it goes to 15 psi again or maybe like 12 and let it fluctuate around 15 psi ( like 12-18 psi ). You;d have the sound plus the responsive boost. Are there any blow off valves like this that exist? I don't want some uncontrolled dump!

nothing internally just RB turboback S-AFC fuel pump etc. FMIC and a few other minor details. I'm finna go standalone next summer probably and a bigger turbo. It's stored while I'm at school.



BTW, I wasn't doing 15 psi before only like 12 or so.

I'll throw out my two cents on the subject:





A BOV will release the surge, and no there arent any that can keep the boost up unless you do what others suggested and smash it in between gears which will of course make your tranny say "f-you, have a nice day...PEACE!"



Also, the BOV allows a compressor to continue spinning in between shifts..that is why (pinfield357) better BOVs actually make a difference. A lot of guys will buy a BOV for the sound quality and looks, not performance. You do need a BOV that will suit your needs. A BOV made for higher boosts is capable of releasing all the pressure it can while minimizing what pushes back against the compressor...if even a little air is pushed back onto the compressor...that causes the compressor to slow down, making it have to spin back up to build more boost.



Bad BOV EX:

1. compressor spinning at 22KRPM making 15psi

2. TB snaps shut, BOV releases 13psi leaving 2psi behind

3. 2psi hits compressor slowing it to 18KRPM

4. compressor now must sping back up to 22K to make that 15psi again. Thus making your acceleration between gears slower.



Good BOV EX:

1. compressor spinning at 22KRPM making 15psi

2. TB snaps shut, BOV releases 14.8psi, leaving .2psi behind

3. .2psi hits compressor slowing it to 21800RPM

3. compressor now only spins a VERY little bit more to catch back up to 15psi.



There are a lot of elements involved, but thats the gist of it. Sorry so long, but I'm bored at work...so leave me alone! Mwahahaaa...

exactly what i wanted to say but didnt want to type that much thanks maybe now he will understand https://www.nopistons.com/forums/pub...IR#>/smile.png

No prob, had the time, lol







Just for accuracy sake though...i know the compressor wheels spin faster then 22KRPM...i just didnt wanna use big numbers.

My Greddy Type S works really well. Its set pretty hard right now (mainly because of the sound https://www.nopistons.com/forums/pub... ) and it releases all the pressure instantly, then when you mash on the throttle again, boost bounces right back up.

just adjust the valve so its lighter...**** the sound

Come on man. Its called intimidation. When its light as hell, my boost just pushes the valve up. It needs to be tight so it won't leak. So I found a good point for sound and performance.