Hey guys,
I have a mcchip-dkr stage 1 tune on my 116i. I can both hear and feel the exhaust is too restrictive. It makes a strong whistle or whooshing sound on high RPM, which I'm guessing is coming from cat. So I would love to replace the whole exhaust with a full turbo back exhaust.
I also want to know if anyone have replaced the charge pipe?
http://www.ftpmotorsport.com.tw/prod...ipe-boost-pipe