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Old 04-01-2010, 07:37 PM   #8
SoCalMonarch
Scooby Specialist
 
Member#: 142752
Join Date: Mar 2007
Chapter/Region: SCIC
Location: Mission Viejo, CA
Vehicle:
2008 WRX STi
White

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07+ EJ257 (STI) motors don't put up with much more than 350 whp for long.. 06 and down is usually good to about 450 w/ a good tune. As for the 06-07 EJ255... I've heard people making 350-400 with em... dunno where the edge of that envelope lies exactly tho
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