16 psi
VIP Member
Joined: Oct 2003
Posts: 297
From: Evansville, IN
Car Info: 2003 Subaru WRX Aspen White
AFAIK, the 2.5L is still 8.0:1 CR (but I could be wrong). The 2.5L produces higher cylinder pressures as rpms increase making the turbo less effiecent compared to the 2.0L at the same rpm. The extra displacement alone was the reason for the increase in torque.
Registered User
Joined: May 2006
Posts: 5,686
From: I was up above it, now I'm down in it
Car Info: New Government Motors SUV!
Originally Posted by testes1010
AFAIK, the 2.5L is still 8.0:1 CR (but I could be wrong). The 2.5L produces higher cylinder pressures as rpms increase making the turbo less effiecent compared to the 2.0L at the same rpm. The extra displacement alone was the reason for the increase in torque.
Just the extra 0.5 displacement alone would be enough reason to decrease boost and still keep it near the the EJ205 output. Then you have little TD04 trying to flow more air than it would in the EJ205 also.
Thread
Thread Starter
Forum
Replies
Last Post
rednek wrx
Aftermarket Forced Induction - Turboed factory NA engines
26
Mar 14, 2003 01:38 PM
spdkills
Engine/Power - EJ20T (pre-2006 WRX and JDM)
5
Jan 28, 2003 07:28 PM
