Previously dynotuned ecu can i add a utec on my 03? - Subaru WRX Forum
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post #1 of 1 Old 09-25-2013, 09:36 PM Thread Starter
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Join Date: Sep 2012
Location: New Hampshire
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Previously dynotuned ecu can i add a utec on my 03?

so heres the situation. i bought my car previous owner tuned it. no piggy backs no acces port with it or anything i assume dynotuned. i recently put in an 04 donor longblock motor when my original spun bearing lost cylinder and ever since the swap that was in and out in a few short hours being a full longblock minus the turbo ive had some issues with boost fluctuating the dyno shop i have locally tells me most likely needs to b tuned to that motor. now i was offered a utec system for 02/03 for trade for struts i got on craigslist. i want the utec system but will my already malfunctioning ecu motor combo is a question can i plug in and fix the issue or do i have to have my ecu reflashed or retuned to use the utec??

03 WRX
07 WRX
05 2.5 RS
90 Celica alltrac turbo
90 Enfini RX-7 JDM FC3S swap
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