Killer B Equal Length 4-1 Holy Header EJ Series 2-Bolt Wire In ECU's the Razor PDM has been

the Razor PDM has been designed with vehicle protection in mind

Rear Main Seal

While small OEM turbochargers produce crankcase vacuum under boost

2012 Subaru Impreza WRX STI Limited 2

Killer B Equal Length 4-1 Holy Header EJ Series 2-Bolt Wire In ECU's the Razor PDM has beenThe Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine the optimal design for increasing power as much as possible throughout the rev range. Short as possible primaries with a single secondary significantly decrease header volume, allowing exhaust gas pressure to build quickly. Symmetrical 4 1 design maintains high and consistent exhaust velocity as RPMs rise. You can expect faster spool up