Bemanistyle [dot] com Forums - View Single Post - Question = Which is better: Single Scroll Turbo or Twin Scroll Turbo???

Blackraven · 02-24-2009, 08:49 AM

Any automotive engineers here? I ask this because I've read up on this and I've found that there are two different power train versions available:

Subaru Impreza WRX STI - Wikipedia, the free encyclopedia

Specs
Japanese Version
Turbo
twin-scroll turbo
Displacement
1997 cc
Power
308 PS (304 hp/227 kW)
RPM
6,400
Torque
422 N·m (311 lb·ft)
RPM
4,400

versus

Specs
Non-Japanese
Turbo
single-scroll turbo
Displacement
2500 cc
Power
309 PS (305 hp/227 kW)
RPM
6,000
Torque
393 N·m (290 lb·ft)
RPM
4,000

So what do you think is better then? What is worse? In what aspects is it better/worse? Thanks

02-24-2009, 08:49 AM	#1
Blackraven //bemanistyle::[Regular] Blackraven is offline Join Date: Jun 2006 Location: Makati, Philippines Blackraven's Collection Posts: 5,150 Marketplace Rating: 0	Question = Which is better: Single Scroll Turbo or Twin Scroll Turbo??? Any automotive engineers here? I ask this because I've read up on this and I've found that there are two different power train versions available: Subaru Impreza WRX STI - Wikipedia, the free encyclopedia Specs Japanese Version Turbo twin-scroll turbo Displacement 1997 cc Power 308 PS (304 hp/227 kW) RPM 6,400 Torque 422 N·m (311 lb·ft) RPM 4,400 versus Specs Non-Japanese Turbo single-scroll turbo Displacement 2500 cc Power 309 PS (305 hp/227 kW) RPM 6,000 Torque 393 N·m (290 lb·ft) RPM 4,000 So what do you think is better then? What is worse? In what aspects is it better/worse? Thanks __________________ Last edited by Blackraven : 02-24-2009 at 08:53 AM.