Loud valves

termcobra281

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Hi all... thinking running a loud valve set up on my exhaust with my single turbo. Has anyone done this? If so how do you like it?
 

badcobra

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Hi all... thinking running a loud valve set up on my exhaust with my single turbo. Has anyone done this? If so how do you like it?
I have Loudvalves on my twin turbo car, they work awesome. With no other changes, I picked up 3lbs boost just adding the loudvalves.
 

tt335ci03cobra

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I have Loudvalves on my twin turbo car, they work awesome. With no other changes, I picked up 3lbs boost just adding the loudvalves.

Can you breakdown the physical theory on how that happens and the benefit of it?

I’m of the persuasion that oxygen count is the desired benefit of any breathing mod. Additionally I understand “boost” or rather pressure build up as a measurement of restriction, and inherently a force to be appropriately facilitated.

Every head, cam, breathing, and exhaust mod that I have done on my turbo car has dropped “boost” readings and added whp/wtq in varying ways (obviously cams shift to higher rpm etc)

Example: when I dump my exhaust at the manifold (manual flaps) I drop 1 or so psi on my 10psi tune and pick up 25-50whp.

I’m honestly asking, not trying to stir shit or internet bash. I learn everyday so this is something that caught my eye as I haven’t seen this before. Thanks.
 

badcobra

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Can you breakdown the physical theory on how that happens and the benefit of it?

I’m of the persuasion that oxygen count is the desired benefit of any breathing mod. Additionally I understand “boost” or rather pressure build up as a measurement of restriction, and inherently a force to be appropriately facilitated.

Every head, cam, breathing, and exhaust mod that I have done on my turbo car has dropped “boost” readings and added whp/wtq in varying ways (obviously cams shift to higher rpm etc)

Example: when I dump my exhaust at the manifold (manual flaps) I drop 1 or so psi on my 10psi tune and pick up 25-50whp.

I’m honestly asking, not trying to stir shit or internet bash. I learn everyday so this is something that caught my eye as I haven’t seen this before. Thanks.
Unfortunately I cannot break down the physical theory, all I can tell you is with no other changes and the boost controller on the same duty cycle, it picked up 3lbs. I'm very confident this translated to an increase in power as I could see the fuel consumption numbers on my datalogs showed a sizable increase. My initial thought on this gain that the mufflers running to dumps before the axle was a significant restriction, especially with how hard I run the car.
 

biminiLX

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Unfortunately I cannot break down the physical theory, all I can tell you is with no other changes and the boost controller on the same duty cycle, it picked up 3lbs. I'm very confident this translated to an increase in power as I could see the fuel consumption numbers on my datalogs showed a sizable increase. My initial thought on this gain that the mufflers running to dumps before the axle was a significant restriction, especially with how hard I run the car.
The change in intake boost is all dependent on how much restriction and backpressure your system has.
Basically if the compressor side is fighting excessive back pressure and you eliminate a large percentage of that restriction, you can build more total flow in the system, potentially seen as more boost if the compressor side is now flowing more air.
Any link to the ones you’re using?
-J
 

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