9

It is quite likely the work performed has introduced a subtle air leak that only manifests itself under high boost. Pressurizing the intake tract with the car off will help you identify the source of the leak. A hose fitting that isn't honked down all the way will exhibit this kind of behavior under boost. I like how Jafro figured out the source of his car'...


8

You can use this tool to get the job done. They are called Hose Clamp Pliers. This is not the right tool


7

I Believe It's a Hose Connection Point Unmetered air whether it's a negative pressure or positive pressure is bad. That being said, I find it interesting that losing some of the boost isn't detected and triggering a CEL. So that maps to your idea of a smaller leak along with the not subtle high pitched sound. You said If it were a bad gasket, I'd ...


5

If nothing else is available, I'd consider boot-pinch pliers, aka nail puller pliers, because the sharp edges will go under the lips and its going to be less likely to slip off than the C clamp. Of course the right tool (as per other answers) would be much better, but for a once-off task then the right tool is quite expensive.


4

Slip joint pliers can do the job quite well, but I usually use a pair of Vice Grips. There is, however a tool made for this. Here's an image of one: It's called a: Spring Clamp - Flexible Ratchet Tool


2

I think that's called an Oeticker clamp, and it's an inexpensive "one-time-use-only" band of steel that is slightly larger than the OD of the hose, with a little squared-off loop on one section. It is "clamped" at the factory with a pair of pliers (or perhaps an automated machine) that looks something like barb wire cutting pliers. It's inexpensive and has ...


1

I ended up getting a 3/8" hose clamp from Home Depot and it worked!


1

The culprit was right here: If you look closely, I made two errors: 1. I put the clamp on at an odd angle. That was dumb because that made it hard to torque down properly. I should have had the main shaft of the clamp pointing up. 2. I didn't torque it down well enough. If you look closely, you can see a hint of a gap between the metal and the hose. Guess ...


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