Quote:
Originally Posted by rikdrt1
I read somewhere that some exhaust was tested at 91-94octane .. to have some 5HP gain,a nd 15HP gain with E85 ?
im a bit of a newbie about fuel but how would a car like this - with toyota recommendations to use premium.. how is it even possible to use E85 ? waht exactly is that ?
maybe its just some b.s. --but trying to understand this. i know some Turbo cars use E85 .. but not sure why either.
?? whats the 3min answer to this ?
thanks
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Here's the skinny
e85 is a fuel that is primarily Ethanol, a very high octane fuel derived primarily from corn, or sugarcane. It is mixed with standard petroleum based gas and other ingredients (detergents to clean your engine etc) to create a form of gas that cars can use to burn.
Ethanol is very high octane (I forgot if it's 108 or 103, I'm tired) and burns more cleanly than gas, however, it also takes more of it to create the same amount of power (about 30% more).
This is the reason your stock vehicle cannot run on e85 without a tune (brz/frs only, some other cars e85 will eat up hoses, injectors, and fuel pumps). After a remapping of your vehicle, more fuel will be pumped in to make up for the loss of power, and give you more, however, at a certain point your injectors will max out, and you need to upgrade those for bigger gains (turbo implementation).
Hope that helps.