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Old 09-01-2019, 12:46 PM   #7
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
2004 WRX wagon


Originally Posted by cashrolling View Post
Please , I search but I seems to find differents infos. Help me understand the difference of my engine compare to a regular STI 207. To be more precise my car just imported from Japan, it's a 2013 STI spec C type RA, NBR challenge edition.
Can anyone explain the properties , weaknesses and strength of this engine compare to other similar version? I appreciate the help, don't really have time to spend hours searching the net.
About the tune it's very safe, no knock whatsoever.
most of the complaints are from the 205 not the 207. the 205 does have rods that are a tad weaker than the 207. 207 rods are the same the usdm sti got.. if you are really worried about strength, get the manley Hbeams and rebuild the block
Originally Posted by cashrolling View Post
The ej207 specC( the one I have) supposed to have different cams and stuff, actually it's not very laggy. By 4000rpm boost starts build and fast, B4 5000 fullboost in 3rd gear, then full power to 8000rpm. It's very nice.
About the tune, as I want it to last as long as possible, I'm going to lower the boost to 24psi, and keep it same way with lower boost at lower rpm and make it increase to redline.
you should be fine with 24. if you are happy with the tune you have... dont worry about it. I have a 2.1 with v9 heads and my powerband doenst really come on til 3700 with the avcs working. 4200 without it
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