would you add water to my set-up?
#26
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water reduces EGTs because it reduces burn temperatures. Water only in an injection system will not affect your AF ratio, it will only affect your EGTs. Water doesn't burn it only becomes a gas, when it becomes a gas it expands alot, and the change from liquid(mist) to gas takes alot of energy, so you get expansion without more fuel. Meth for the pipes, water for the engine. At 25% meth my pipes aren't cool, but at 50% they are cool to the touch.
#27
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And yes, water alone will measurably decrease EGT for a given power level, more so assuming that it permits an advance in ignition timing.
#28
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While I'm not debating that injecting meth upstream of the TB will have a cooling effect on the pipes (and thus a nontrivial anti-detonant effect on the engine) the most significant benefit to WI in a FI application is due not to evaporative cooling, but rather due to the direct knock-suppressing qualities of water within the chamber during the combustion event.
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