something different Posted July 23, 2011 Share Posted July 23, 2011 i have a '06 ej256 in my 98 legacy wgn and am using an ecu from a 04xt and cobb stage2. question is can i just put an ecu from a 04 sti in and have the same performance? i already know that the ecu are interchangable. thanks, tom Link to comment Share on other sites More sharing options...
NSFW Posted July 25, 2011 Share Posted July 25, 2011 The STI's additional power comes from the STI's bigger turbo. Swapping ECUs won't help. However, you can almost certainly have your curent ECU re-tuned for whatever modifications you want, including an STI turbo or something even bigger. If it is supported by the Tactrix OpenPort and/or Cobb AccessPort (and I'm pretty they both support it) then there is no reason to switch it out for something else. Link to comment Share on other sites More sharing options...
something different Posted July 26, 2011 Author Share Posted July 26, 2011 yes, well i don't mean the same performance as an sti, although what i have now is very close. my current turbo makes 17 psi boost and the performance is more than adequate. i just want to go with an ecu that i don't need to use the cobb access port with for the same performance as i have now.. Link to comment Share on other sites More sharing options...
NSFW Posted July 26, 2011 Share Posted July 26, 2011 An AccessPort (or OpenPort) plus your current ECU, turbo and mods will give you more power than any stock Subaru ECU with the same turbo and mods. I'd bet money on that.* * Only about $5, but that's a lot for a guy who never gambles. Link to comment Share on other sites More sharing options...
goneskiian Posted July 26, 2011 Share Posted July 26, 2011 yes, well i don't mean the same performance as an sti, although what i have now is very close. my current turbo makes 17 psi boost and the performance is more than adequate. i just want to go with an ecu that i don't need to use the cobb access port with for the same performance as i have now.. Maybe you know something I don't but how do you figure a stock tune will be better than a custom tune? You do know there are other tuning options besides the AP don't you? As NSFW has stated, open source with a tactrix or VAG COM cable is a great option. Link to comment Share on other sites More sharing options...
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