Since mine has the "C" I suppose i won't touch it. Close enough to D.
Its a very subtle whistle upon open throttle full acceleration. I have the rev D recirculating valve, the car had a C from the factory which was also a newer piston type valve. The valve made no difference, i do not believe its from that but rather from air rushing into the intake piping and swirling into the compressor.
Since mine has the "C" I suppose i won't touch it. Close enough to D.
I really want to finally hear the solution for this.
Does removing the soundakaotor the solution?
K04 is the solution
Bump! So I installed the unitronic cai and started getting a very loud wine at 3k that gets louder as the rpms go up. I just pulled my dv and it's Rev d. Any other ideas?