Quote:
Originally Posted by DrBacon
Strongly disagree. You have two choices with water/meth injection
1) Use it as a safety. Tune the car for max "safe" timing on your normal fuel and use water/meth as basically an additive to negate any possible knock and reduce IAT's. Marginal if any increase in power. Car does not depend on it and the system can fail without any real downsides.
2) Use it as a power adder. Timing is increased beyond the normal limits of your pump gas knock rating. Now you've introduced multiple failure points in which can compromise your engine if there was a problem. The wiring can fail, the pump can fail, the nozzle can clog, you can run out of the water/meth mix, etc
None of this even includes the fact that methanol by nature is very corrosive. Yes, the water mix dilutes it and helps, but does not completely eliminate the inherent nature of methanol. Everything downstream after extended use is at risk. Seals, electronics (MAF/Sensors), hell it even eats aluminum too. Now, while there is "probably" going to be a negligible effect over the lifetime of the engine IF using a proper water/meth mix and only activating in boost, is it worth it? I don't think so. Just use ethanol lol.
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I’ve used it on 3 builds and current build never with any issues whatsoever.
You don’t spray pre MAF…
Properly atomized 49% or less WM mix won’t cause any corrosive issues/concerns to anything that it would come in contact with. It’s too little amount, too low concentration and for too brief of time. If you have poor atomization, spraying way too much, have dripping or pooling issues or spray in the wrong part of the system, sure it would possibly be a concern. But that isn’t a concern on proper setup.
Your 1. Is always an option and has phenomenal benefits to heat soak/consistency of back to back pulls. Always a great easy safe option, but correct I wouldn’t consider it a power adder rather a power retainer.
Your 2. Is incorrect with a proper setup. WMI failsafe pretty much eliminates all of this concern and you can safely tune for the increased octane, cooling, and supplemental fuel being added and get great power gains in addition to the heat soak/consistency from option 1.