| It is very simple to upgrade your system to run E85. You need at least 740cc injectors and something to tune with, stand alone or nistune. I have been running stock long block with stock turbos with full breathers and have had no issues. I have nismo 740cc injectors with stock fuel pump and nistune. I also changed all of the fuel line I could. I gained almost 80whp switching from 91 to E85 and the torque was even more. my mods list is up to date in my profile. If you have E85 available that close to you I dont see any downfalls in using it beside if you want to take a long drive. If you do that often just have the tuner make you a 91 oct tune and switch it if you need. Most good E85 tuners will compensate for the variance in flex fuel. The only thing you should need is a good wide band so you watch to make sure your afr is still good. Here in MN we dont get good e85 until may and it usually goes to e70 in late sept. when I see it go to e70 I just dial back the boost a few psi and its good to go. All in all I think if you have easy access to it you should switch. If you dont you will always wonder what it would be like. Hope this helps.
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