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Old 09-03-2012, 02:46 PM
00Powerstroke 00Powerstroke is offline
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Default Waste gate and blow off valve not working together

Hey guys, i am in need of some help, I am looking at buying a 2008 f350 that has had some work done. I took it for a ride today and from what I could tell the waste gate and blow off valve are not working right or in tune. if you are in between easy and full throttle you can hear one of the two letting off pressure but if your into it neither activates till letting off. If i get into it like half throttle it would buck like it would get into the power then dump so lose power right on a shift and you get the idea. But if i was easy on it or laid into it, the thing felt great through and through, power and shifting wise. So I am unsure of how to tackle this problem if I buy the truck. I figured the blow off valve was overkill so I would shut it down and try and tune the waste gate in and see how it does there. Any input or thoughts on this would be much appreciate.

List of mods include:
egr delete with wastegate setup and manual pressure regulator
bd turbo guard blow off valve on intake side of intercooler
arp's
spartan dashdaq running 310 tune i think it is
4in dp to 5 in exhaust
cfm elbow
cai
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Old 09-03-2012, 02:56 PM
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Cory S Cory S is offline
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I would just take the blow off valve off of the truck and tune the wastegate. And you would be good to go


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Old 09-03-2012, 02:56 PM
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The two don't work together. Blow off valve does what you said, releases pressure when you get out of the throttle fast. i have one but it started blowing off boost so I shimmed it and now it does nothing. Waste gate blows off pressure to keep back pressure at a safe level. You can still acccellerate and hear boost blowing off? Mine did that but would barely move. Bucking may be tune related, I would cap the bov and work on the wg, it is more important.
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Old 09-03-2012, 03:08 PM
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What brand wastegate kit? If its an Elite Diesel kit you will never here the wastegate open but if it's a Wide Open Performance kid you'll hear when it opens. Like said, cap the blow off valve and get the gate working then dial the bov in once the gates setup. Have fun.
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Old 09-03-2012, 03:52 PM
00Powerstroke 00Powerstroke is offline
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Quote:
Originally Posted by Cory S View Post
I would just take the blow off valve off of the truck and tune the wastegate. And you would be good to go


Sent from my Motorola razr (flip phone)
That was my plan but i figured it couldn't hurt to get an opinion

Quote:
Originally Posted by Erikclaw View Post
The two don't work together. Blow off valve does what you said, releases pressure when you get out of the throttle fast. i have one but it started blowing off boost so I shimmed it and now it does nothing. Waste gate blows off pressure to keep back pressure at a safe level. You can still acccellerate and hear boost blowing off? Mine did that but would barely move. Bucking may be tune related, I would cap the bov and work on the wg, it is more important.
Maybe i miss-worded but i meant they weren't working properly.

Quote:
Originally Posted by White_monster View Post
What brand wastegate kit? If its an Elite Diesel kit you will never here the wastegate open but if it's a Wide Open Performance kid you'll hear when it opens. Like said, cap the blow off valve and get the gate working then dial the bov in once the gates setup. Have fun.
Not sure about the brand, the wastegate has a downpipe for itself, it appeared to be a piece of one inch steel pipe that goes down the back side of the motor on the drivers side. Looking at the website it doesn't appear to be an EDE wastegate kit, heres a picture of the wastegate on the truck.

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Old 09-03-2012, 03:53 PM
00Powerstroke 00Powerstroke is offline
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and heres another picture
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Old 09-03-2012, 04:05 PM
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Looks like a jgs gate..
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Old 09-03-2012, 05:54 PM
00Powerstroke 00Powerstroke is offline
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Quote:
Originally Posted by kyle43335 View Post
Looks like a jgs gate..
the way you said that worry's me
  #9  
Old 09-03-2012, 06:25 PM
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Powerstroked162 Powerstroked162 is offline
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Synops(sp?) gate. Remove and replace with a Tial-MVR or a Turbosmart gate. Setup spring pack. Set the reg. Be mucho happy!


Those gates, the one you have, are a nightmare.
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  #10  
Old 09-03-2012, 07:23 PM
00Powerstroke 00Powerstroke is offline
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it definitely appears to be a jgs, looked one up on their site and it looks the same
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