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  1. Alfa Giulietta
    In the intercooler thread I mentioned that I have fitted an aftermarket diverter/blow-off valve on my QV. Since I can't find anything on this topic here, I thought it might be interesting for you guys if I shared a bit of my experience. The reason I started looking into aftermarket diverter...
  2. Alfa 159, Brera & Spider
    So in the previous topic about removing the ressonator box,the general consensus was that it was best left untouched,so my question is,already having a BMC filter on the stock airbox,how can i increase the diverter valve "dumping" noise,and most importantly,how can i do it without having black...
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