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sunnychang
08-03-2007, 09:57 PM
i have a built ka with a gt35r. around 12 psi the turbo sounds pretty smooth. but on 15 or high psi the turbo sounds weird. it sounds like the turbo is going on and off really quick or kinda like a fluttering noise. this only happens at wot. is this compressor surge? what causes this? does it hurt the motor? i want to find out what it is before i take the car in

sunnychang
08-09-2007, 04:05 PM
anyone know what this is?

TS4l
08-09-2007, 04:12 PM
It could be compressor surge or is there a possiblity of a boost leak? I know when I have had a loose coupler you can hear the turbo more and when its a leak that isn't always open sometimes it sounds like fluttering. If its compressor surge it can hurt the turbo but I would doubt that at this low of boost you would have compressor surge.

sunnychang
08-28-2007, 12:09 AM
i found out it is turbo surge. Why is my turbo doing this? The shop told me to get a anti surge housing but, i would like to fix it some other way besides spending another 400 for a new housing. would the aiv hooked up to the intake on the turbo cause this?