just had a quick question currently have I/H/E/Hondata IMG/TB/75 Dry Shot/Flashpro Tune. Im basically tuned for those supporting mods and wanted to know what would happen exactly if i went on an empty tank an filled up 2 or 3 gallons of e85 in my car? would i make any MORE power than i already have with just adding that ? or would i have to get RETUNED to make the new hp? I believe i would only need new injectors if that much ? cause im already throwing out enough supporting fuel to hold the nitrous set up and figured i could support the e85 as well with my current tune.Also thinking bout throwing in a 100 jet dont believe i need to get retuned for that, what do you guys think -Thanks

 

What does basically tuned mean?

Running E85 is totally different. So yes a different tune would be needed.

E85 will consume about 30% more fuel so you have to make sure your injectors and pump can handle it. Hop onto the FI section to get better answers.

 

This is the wrong section for this post... This should have been under S2000 Engine Management.

Regardless, the answer to your question is YES, you will need a new tune. As Vi3tBoy said, E85 consumes more fuel so your injectors and pump might not be able to supply enough fuel. In addition to that, your fuel maps and ignition timing will be off. Your car will run terribly without a tune.