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Hey guys I'm new to the Subaru word and having an issue.... So I bought a 04 Impreza wagon with the 2.0. my issue is if I run ethanol free 91 octane fuel. It runs like crap,sluggish, barley idles and throws cylinder 1 2 3 4 misfire codes. If I run 91 octane with ethonal or mix a gallon or 2 of e85 it runs good. Is this normal. So the mods that was done by previous owner.
Blouch 18g xtr turbo, charger injector dynamics, 1050 x fuel injectors, grimspeed intercooler, catless uppipe, Cobb 3port ebcs, Cobb intake, Cobb turbo back exhaust. And been tuned for it. Any help would be much appreciated.p.s It doesn't have an e85 tune on it.
 

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It's worth a call into the tuner. Talk about the issues. The calibration might require some tweaking.
 
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