Changed up-pipes, still no power and now weird sound. - Ford Powerstroke Diesel Forum
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Old 07-06-2013, 11:42 PM
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Changed up-pipes, still no power and now weird sound.

I changed my up-pipes and now my power just off idle feels better but after that it feels like I've lost power. If I give it it lots of throttle it doesn't like to move very much and smokes like a son of a gun.

Before I did the up-pipes it used to have a slight hiss/tick sound but now it makes a sound like when you've just started a portable gasoline compressor and have the relief valve open while it warms up. It's more of a sucking sound than a pressure sound.

Only thing I can think of is somehow I left a rag in the intake but I recall removing them all... unless there was two somehow in one hole and I only removed one... Any other Ideas?

Last edited by mechanicboy; 07-06-2013 at 11:46 PM.
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Old 07-07-2013, 09:54 AM
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sounds like your ebpv is staying closed, try unplugging it right under your turbo, and go out for a test drive, but it does sound like that. If it was me, I would just leave unplugged.
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Old 07-07-2013, 12:38 PM
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I feel like an idiot. This morning I woke up and knew what the problem was, well one of them. I remembered that I didn't reconnect the manifold pressure sensor. I connected that and the black smoke seemed to go away for the most part but still no power. I could barely go 55mph. I popped the hood while it idled and was thinking that it's like I have no boost. I was looking at mine intercooler lines when I saw that the passenger side intercooler line was blown off. I never tightened down the clamp. I was so caught up in not forgetting everything on the turbo and behind the turbo that I forgot the simple things.

So this EBPV, does that mean Exhaust Back Pressure Valve? That must be the flap on hot side of the turbo leading to the downpipe that looks useless. Are you saying that if I disconnect that it will keep the valve open? Is there any drawback to disconnecting this?
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Old 07-07-2013, 03:06 PM
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Quote:
Originally Posted by mechanicboy View Post
So this EBPV, does that mean Exhaust Back Pressure Valve? That must be the flap on hot side of the turbo leading to the downpipe that looks useless. Are you saying that if I disconnect that it will keep the valve open? Is there any drawback to disconnecting this?
no drawbacks. Most members gut the valve anyway, and lay the plug down in the valley. With it disconnected, the pcm cant get a false reading, telling the valve to close.
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Old 07-07-2013, 06:25 PM
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Originally Posted by timmyboy76 View Post
no drawbacks. Most members gut the valve anyway, and lay the plug down in the valley. With it disconnected, the pcm cant get a false reading, telling the valve to close.
So the valve will stay open all the time with no ill affects? I wish I had known that while I had the turbo off because I would have taken that thing off.
I'm having a brain fart so I can't remember what it's called, but the bypass valve that is vacuum controlled, can I disconnect that too with no ill affects?
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