Quote:
Originally Posted by Chuck33079
FWIW, I was running 93+meth on my STI. I asked my tuner about E85+meth, and he talked me out of it. From what he said, the E85 is actually a higher octane than 93 with a 50/50 water/meth mix. In effect, I would be lowering the octane of the fuel by adding the meth in. If you're staying with bolt-ons, you would only need a fuel pump and injectors if you plan on running E85. 91 shouldn't need it.
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Thanks for the clarification. Wasn't sure the octane value of meth. I would definitely prefer just E85, not necessarily for any power improvement, but as stated before, the cooling properties. It's just a bonus for me that it's more efficient. This would most likely be done for FI, not NA. I'm expecting a drop in over all psi with the headers, hoping to still make the advertised amount going to SC option.