hissing downpipe?
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hissing downpipe?
I decatted my 03WRX recently courtesy of a Janspeed/Scoobysport system and now cant help but notice all sorts of noises coming from the downpipe. Seems to hiss and make a metallic type noise as the car spools up. Is this due to the open neck dp or am I experiencing some mechanical failures/leaks etc?
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