DirtyMaxx03
New member
- Joined
- May 22, 2011
- Messages
- 2,862
i've never heard of a turbo making more boost pressure than drive pressure. under any condition.
That's interesting, thats a BFT if it can work on negative DP:BP ratio :Cheer:
How much higher? 1-3 or more?
i've never heard of a turbo making more boost pressure than drive pressure. under any condition.
I just so happen to have video it's a long one in raw format. lemme see about some on phone video editing to see if I can get a clip for ya.
i believe you. you dont have to waste your time man. i cant figure out how its possible tho lol
so how would this setup work on your truck jason when dp is plumbed to the top of a bov, boost on the bottom yet boost is higher than dp? that means the bov will not infact work if dp is less than boost correct? or if you let off quickly, does your drive pressure drop to close to 0 psi before your boost does?
lol i understand how they work, ran the bd bov on my old duallie for a few years, worked as need, my question to you is how would you run a BOV on your truck with DP plumbed to the top if your boost is in fact higher than your drive pressure what i just cant see. i dont understand how drive pressure can be less than boost under load. how can a turbo make like you stated say 40psi and have drive at only 20psi? i just dont think its possible and thats just me, so thats why i asked.Are you talking about external wastegate or BOV (on the intake)
I don't have a BOV installed currnetly. I have one on the shelf. Pondering installing it still. heh. The one I have is the Turbosmart electronic one that's TPS activated.
How it's supposed to work AFAIK:
1. Boost is applied only to the top. There is no drive pressure plumbing
2. As boost rises it applies more pressure to the top in addition to the spring that's already in there. so, say you have 5psi worth of valve pressure with the spring only you have Boost+5psi holding boost back
3. Lift on the TPS. a valve pre-BOV opens and vents boost allowing intake boost to overcome the BOV pressure.
It's always been like that as far as I recall. never had a DP gauge on the stock turbo. just this one and the last one. It's not a slow moving gauge problem as far as I can tell. take an air compressor to the back the gauge and it reads instantly. The tubes get cleaned out when the gauge clogs up when I have things apart. -- maybe it's a stock cam thing on a dodge? LOL
lol i understand how they work, ran the bd bov on my old duallie for a few years, worked as need, my question to you is how would you run a BOV on your truck with DP plumbed to the top if your boost is in fact higher than your drive pressure what i just cant see. i dont understand how drive pressure can be less than boost under load. how can a turbo make like you stated say 40psi and have drive at only 20psi? i just dont think its possible and thats just me, so thats why i asked.
Worse as in greater DP than Boos Pressure?at WOT it's 1:1 or worse for sure.
Worse as in greater DP than Boos Pressure?
I read about a guy using no spring on another forum to get his to work on a stock truck.
Try the small spring (I assume your using one of your BOV's).
Report back on how it works.
I am interested as well.