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  1. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Ok, so on my old 2003 GTI 1.8T the previous owner had a Forge Diverter valve on the car already when I bought it. Instead of the turbo making the normal "whooosh" noise when releasing throttle and pressure it would make a high pitch "CHIRP". What Diverter valve was this or was this...
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