Originally Posted by Equilibrium Tuning
That 2.5l setup could easily go to 8k+ RPM as well. Also notice its running less boost than the 2.34 and seems to be running out of fuel up top. I just don't understand why people think the 2.5's can't rev out. They're already fairly short stroke engines so piston speeds are not a big issue.
I think the purpose of the 2.34 is rod ratio more than anything. That's something I think we can all agree that the Subaru engines lack.