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Old 11-03-2009, 01:13 PM   #1
Scooby Newbie
Member#: 113799
Join Date: Apr 2006
Chapter/Region: South East
Location: Orlando, Florida
2002 Wrx
Aspen white

Default Help sti swap in wrx

Hi guys,
i just recently swapped my 2.0 for a 2.5 but my UTEC died on me, but i am wondering if i can still drive the car on the regular ecu with the boost pushed down. If not if any one knows about a tunner in orlando fl, who does open ecu... please some one help...
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Old 11-03-2009, 11:26 PM   #2
Scooby Newbie
Member#: 224598
Join Date: Sep 2009

if you did just a 2.5 long block (or shortblock) and still have the 2.0 ecu... i wouldnt try to drive it. You need to compensate for the injector difference and the .5 L
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Old 11-09-2009, 01:51 AM   #3
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Member#: 229407
Join Date: Nov 2009
Chapter/Region: MAIC
Location: Southern West Virginia
1995 Impreza ???


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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