I just installed the Nessie UICP and now when I go above 2.9K RPM I can hear a very distinct and load swooshing sound from the engine bay. I was wondering if anyone else that has installed an aftermarket UICP has noticed any changes in sound like this? Or, possibly if anyone would know what this might be? I have checked all the couplers and they are all very tight so I don't think it is a leak but I am not sure. Any ideas or comments are appreciated.Thanks guys.

 

If power is down as well, then you probably have a leak. My UICP has a couple of joins in it and with the Blitz air filter, you can certainly hear the air flowing through the pipes under boost. I had a leak when I installed and really noticed the loss of power and an even louder hiss/leak noise.

 

did you do a new intake as well?

 

No, the intake is stock. The only mods I have are:
Evo X Intercooler
Evo X BOV
Custom 3" Cat-Back
Nessie UICP

I will check again to see if there are any leaks in the system. The car definitely feels sluggish though.

 

Was the car sluggish when you had your other mods befor you put on the uicp. does the car feel sluggish in all the gears or when your boost up

 

idk about the nessie but when i installed my ams upper pipe and intercooler the sound of the air passing through the pipe was way more noticable when in boost...i just thought is was because it was a hard aluminum pipe instead of the sound deadining rubber...

 

i'd say take it apart and put it back together incase of a leak.

 

your best bet is to take it apart and redo it, make sure everything is tight. you would know if you had a boost leak, you know your car the best. also replace the clamps with T-clamp, i just replaced all my old clamps with T-clamps and let me say what a difference..

 

put the old one back and check if it still does it. my guess is its the swooshing of the turbo.

 

The bottom clamp where the UICP connects to the IC was a little loose. Tightened it up and now everything is good.

 

Yeah was going to say, guaranteed boost leak.

Not sure if you guys make boost leak testers, but I made a boost leak tester I made for my DSM, and it's the best thing since sliced bread. Makes finding boost leaks much easier. Hook it to the intake side of the turbo, pressurize it with a compressor (regulated) and listen.

 

I hear it too. At first i thought it was a leak but i had no loss in power and my boy told me that its just the sound of the air flow.

 

my clamp was loose in the same place yours was, i made sure to put it a bit tighter this time