E85 will give you more power, if you do not have access to E85, your next step would be turbo upgrades that will hold boost to redline unlike the stock turbos which taper way down to redline. Wastegates do not give much on stock turbos using pump gas.... all they do is add heat which increases the likelihood of knock...
Well im located in lebanon so we do not have E85 here
How much boost are you running ??
Im at 18 psi now
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