along the same and be on the same engine EK9 (B16B), 4.3 kg flywheel and Spoon ECU. EK91: OEM Cat, 5Zigen catback ProRace Spec A (normal) Vmax ~ 220kph (in the video ~ 200) EK92: De-Cat pipe, catback 5Zigen A Spec ProRace (both removed as a small muffler) Vmax ~ 250-255kph ( Video ~ 250) EK91 RIP: '(