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Old 11-09-2009, 12:51 AM   #3
preza95
Scooby Newbie
 
Member#: 229407
Join Date: Nov 2009
Chapter/Region: MAIC
Location: Southern West Virginia
Vehicle:
1995 Impreza ???
red

Default

if you try to run the 2.5 on a stock 2.0 ECU, it will be sluggish and struggle in area it normally wouldn't, an you may be faced with engine problem if driven like that over any extended period of time,such as premature wear on the cams,valves,bearings and timing set. The stock 2.0 ECU won't allow the 2.5 sufficient air and fuel which can stress those parts over time. You may be able to buy a custom chip to make up the difference.
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