We suggest the replacement of the oem blow off valve know for its weakness by the precision efi-turbosmart capable to handle a pressure of more than 17 psi . This bov is a good upgrade for any 998 turbo as we encountered some leakage issue even on a stock sled.
ideal for rider who don't want to be noticed but need the performance and reliability benefit of a high quality blow off valve
No cutting or drilling, perfectly matched to the
original configuration for precise fit and easy installation.