Explanation Please.
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Freshman User
Joined: Sep 2005
Posts: 46
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From: Houston Texas
Explanation Please.
Would someone please explain why my truck runs great with the red tube disconneted from the wastegate with more than enough boost but when I hook up my 5th wheel trailer it runs better with the wastegate hooked back up. Thanks.
Elder User
Joined: Mar 2003
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From: Mandeville, La
The general info on this board is that there is a turbo stall condition that occurs under load. The stall/surge is prevented by the wastegate, but removing it allows the boost to build faster under a no load condition.
Elder User
Joined: Sep 2004
Posts: 780
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From: Chicago suburbs
It doesn't really eliminates the waste gate, but now only held down by spring pressure. It will still open eventually. The red tube which is connected to the selenoid, now does not activate it by pressure supplied by the red tube. By removing it, "eliminates" the waste gate.
Elder User
Joined: Sep 2004
Posts: 780
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From: Chicago suburbs
Originally Posted by texas_vet
So as long as i am under load this is to be expected, Is this where the wicked wheel would allow you too leave the tube unhooked and mostly eliminate the stall problem?
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Joined: Jun 2005
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From: New Hampshire
The WW is the cheapest effective device at controlling surge. The problem with the stock wastegate is the spring doesn't have enough tension and releases
drive pressure thru the wastegate to early causing the surge/flutter. Once u install the WW adjust the spring tension by shortening the length of the road
(clockwise turn with vicegrips). No more flutter...serious boost and better egt's.
drive pressure thru the wastegate to early causing the surge/flutter. Once u install the WW adjust the spring tension by shortening the length of the road
(clockwise turn with vicegrips). No more flutter...serious boost and better egt's.
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
I second PSNut's advice. I did exactly that and it completly cured the stall/flutter coming from the intake. I was getting it even with a stock tune. Now I can pull the hills using the Diablo Predator Tow/Haul tune and still no flutter. It'll pull 27 psi boost easy doing that. If I flip on the 10k mod the boost goes up to about 28-29 psi and then the WW can't keep up. It will begin to stall. I don't need that much to maintain speed on the hills so I never run it that way. I just did it once as an experiment.
Suffice it to say if you don't have any tunes beyond Tow/Haul while towing, the WW is all you need.
Suffice it to say if you don't have any tunes beyond Tow/Haul while towing, the WW is all you need.
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Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by Rich in CO
Why couldn't you just adjust the wastegate spring with out having to install the WW, or is it a combo of the WW and spring adjustments.
Here's a picture from Johnny8's gallery showing the difference. You can see that the WW fins are staggered.
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Joined: Apr 2005
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Thanks Kwik, I can see the difference in the wheels.
I have noticed the same issue as Texas when towing with the wastegate un pluged. During my next tow I was planning on hooking it back to see the difference, but that wont be until spring time. I never noticed the flutter/surge with my stock box, but I did when I had the Nappa fiter, and I understand why that was. I have now moved to an AIS, and have not towed with it yet, and I'm sure flutter/surge is still there and the AIS will block out alot of the sound also.
My questions is what type of performance loss would I see towing with my wastegate hooked back up. IE loss of power, higher egt's.
I guess I'm thinking just hooking back up is the easy way to prevent the surge issues. Plus I'm not sure changing to the WW is some thing I can do it looks pretty tough for a guy who does not claim to be good with the wrenches, and has never spent the night at a Holiday inn.
I have noticed the same issue as Texas when towing with the wastegate un pluged. During my next tow I was planning on hooking it back to see the difference, but that wont be until spring time. I never noticed the flutter/surge with my stock box, but I did when I had the Nappa fiter, and I understand why that was. I have now moved to an AIS, and have not towed with it yet, and I'm sure flutter/surge is still there and the AIS will block out alot of the sound also.
My questions is what type of performance loss would I see towing with my wastegate hooked back up. IE loss of power, higher egt's.
I guess I'm thinking just hooking back up is the easy way to prevent the surge issues. Plus I'm not sure changing to the WW is some thing I can do it looks pretty tough for a guy who does not claim to be good with the wrenches, and has never spent the night at a Holiday inn.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Rich I honestly don't know what it would be like towing with the WG plugged back in - I've never done it. I don't know that plugging in the WG will help with your 75 HP chip. It'll easily spool the boost up at low rpm's. Try it and see what happens and get back to us. 
Then we all can know.
Then we all can know.
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Freshman User
Joined: Sep 2005
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From: Houston Texas
hey Rich to answer your question. when i was towing with the waste gate unplugged and the stall was way too much to handle I pulled over and hooked it back up andthat cured the problem. I now run it unplugged when I am not towing and it runs strong and when i start towing i plug it back up. I am running the HYPERTEC ON 3RD LEVEL which I think is only aroun maybe 50 hp at most . With the Kwik filter and the extra50hp and 4 in all the way it tows ok but as you know we all want that little extra. good luck
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