BUY THE FILTERS:
EU: https://ebay.us/XaaC4w
US: https://ebay.us/xH5yYN

Step by step guide to how you mount BMC open air filters and get a RS-like sound in your 4.0l Porsche Spyder, GT4 and GTS models. Same goes for any 981 or 718 models!

The best mod I have done so far. Beats a $$$$ aftermarket exhaust!