Quote:
Originally Posted by DSM_Nick
I agree with the other member, the video of the car suppossedly "compressor surging" with the hood off, was indeed not "compressor surge". That was blow of valve flutter, many people confuse the two. Easy way to tell the difference......BOV flutter occurs when letting off of the throttle, which lets the valve let off and you hear the noise. Compressor surge occurs under load, such as open throttle and accelerating.
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Um the very first video is compressor surge. Its caused by the BOV being to tight and not letting all the compressed air and and forcing it back into the housing.
Either way both are bad for Turbos.