Flex fuel

[Jdperezz23]

Can I safely run any e85 on my 17 si without issues? and if so how much?

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[turbociv910]

High ethanol content has been known to causes injector issues. Most people stick around 40%.

 

[repeet]

Our cars are rated for E15 from the factory. A greater concentration than that and your Engine Control Computer is trying to play catch up. You can buy tunes for up to E85, but like turbociv19 said, 40% seems to be the sweet spot for our engines when they are tuned for it.

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