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389 Posts
So today while driving with the windows down I noticed a high pitched whistling noise when barely getting into boost that I haven't heard before.. Almost like a jet turbine starting up! I only noticed this after installing a symposer delete plate.. I just have a green filter and the JBR corner piece that replaces the ugly accordian piece. Is this normal and have I just now noticed it for the first time? Or Could it be from installing the plate wrong?