Closed loop?
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Closed loop?
Do you loose any hp whith a closed loop setup? Does it matter where it ties back into the exhaust? Could you weld the dump tube right into the top of the DP?
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Re: Closed loop? (ekb18c)
I dont think you can acutally lose horsepower with a closed loop setup. And it shouldnt matter where you weld the dump pipe to the down pipe.
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Re: Closed loop? (BLK94RS)
If you weld it to the top of the DP it has to fight the exhaust exiting the turbine and you will lose horsepower as well as have possible boost creep problems. If you plumb it back into the exhaust well after the turbo it is fine.
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Re: Closed loop? (dbman96)
If you weld it to the top of the DP it has to fight the exhaust exiting the turbine and you will lose horsepower as well as have possible boost creep problems. If you plumb it back into the exhaust well after the turbo it is fine.
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Re: Closed loop? (Tom)
I was thinking I could make a testpipe with the dumptube welded to that. Then I will put a flex pipe somewhere between the waitgate and the test pipe. Will that work?
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Re: Closed loop? (BLK94RS)
Uhm.. no.. dont listen to what Tom just said. You wont lose HP if you plumb the pipe down, far from the turbo, and with an agle at the connection to the exhaust. Dont have it plumbed straight to the exhaust like a "T". Have it like a "V". The reason F-MAX lost so much hp with a closed loop system is 1.) they had it plumb'd real close to the turbo. 2.) cuz they actually routed the pipe in the direction TOWARDS the turbo..
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Re: Closed loop? (Tom)
Im understanding it alot better now. I think when the times comes, I just weld it in "v" to the very end onf the DP like Rob92SC said.
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Re: Closed loop? (BLK94RS)
oh... just so io may be allowwed to clarify... any power loss isnt going to be really noticable... maybe ull notice it if u have it vented back into the exhaust right after the turbo (once again for low boost)
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Re: Closed loop? (BLK94RS)
I would say probably the same diameter as the output of the wastegate. Then go all the way down by where a flex pipe would be and weld it into that dp in the y shape. I will have to experience this first hand in a couple of weeks when I fabricate my downpipe. Ofcourse I will post pics. Unfortunately I will be going with a 2.5" dp cause I dont feel like upgrading my catback from 2.25 to 3".
Stay posted!
Stay posted!
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Re: Closed loop? (93LSivic)
Is the closed loop waist gate alot quieter that a open waist gate? Iv never heard a open waist gate, or cloosed loop waist gate for that mater, but can someone explain the 2 different sounds for me?
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Re: Closed loop? (BLK94RS)
Just look at Dustin's "My car is alive again" thread. You can see how he welded tubing to his DP and used mandrel bent tubing out of his wastegate. When I talked to him, he said that he used flexpipe as well...probably in between the two pipes.
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Re: Closed loop? (BLK94RS)
Is the closed loop waist gate alot quieter that a open waist gate? Iv never heard a open waist gate, or cloosed loop waist gate for that mater, but can someone explain the 2 different sounds for me?
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Re: Closed loop? (BLK94RS)
open wastegate sounds like an exhaust leak, closed wastegate is basically silent. And like tom said, no matter where you put it you will lose power, placement just depends on how much you lose. btw im not talking about big numbers here, you plumb it correctly and you will lose less then 10hp
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Re: Closed loop? (PureTeg420)
I honestly do not think you lose much power. I did not notice a difference... the car actually feels faster after (I lost my A/C too though).
Dustin
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Re: Closed loop? (dustin)
another option to think about is just welding a muffler of some sort onto your dump tube. Figure out what to use, and how you are going to mount it. I used to ride moto-x bikes, and i think a 125-250cc race muffler would work quite well. They are small, and not terribly expensive. It would look pretty cool too !
#25
Re: Closed loop? (D-SPEED)
I will run open loop to start with, then later if it is too loud I MAY go closed loop. I do not mind extra noise, so I will probably stay open loop. I like any extra intimidating sounds, esp since I have a little SOHC!!! Then I may get some of the "big boys" to chicken out so I will not have to run them! YEAH RIGHT!!!!
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