Absolutely do NOT do that. You need a tune to both safely fuel the engine AND to take advantage of the potential provided by the corn. A good Lund E85 tune would be the best first mod if your willing to potentially compromise your warranty.
Lots of discussion on this, do a search to learn more but the consensus is that, in most cases the factory air box is very good and there is not much of anything to be gained, especially when stock. The 18 and up is good enough that some15-17 peeps are putting it on their car.
Thank You! i will save the money for stripes and side scoops!
Thank You! there is an E85 station down the street from me is why i was wondering. I will stick with 91.
tooling around down the corn is pointless. Does Cali even have true E85 or is it some cheater mix? Grab yourself a tester and check that station from time to time to see if it's consistent. You can throw 3-4 gallons out of 16 into the tank if you want. Go find a fuel mixture calculator (eg. http://www.wallaceracing.com/ethanol-mix-calc.php) and you can play up to E30 without problem.