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Message: <blockquote data-quote="Hellion94" data-source="post: 688182" data-attributes="member: 8471">Re: In Response to Javi's Post....Wow i thought this thread had died. Water/Methanol vs. Nitrous is really not a heads up comparison. Nitrous oxide is purely a power adder, it does so by making the air incredibly dense, allowing for more fuel to be added, and therefor increasing power by increasing the amount of combustion in the cylinders and creatin much higher cylinder pressures and temperatures, But Nitrous itself does not burn. When you add nitrous to an engine, you aren't burning the nitrous as much as you are super-cooling the air in the cylinder, making it VERY dense. Case in point - that's why you have to have a fuel nozzle as well as a nitrous nozzle, because you need to burn the fuel, the nitrous doesn't burn and without additional fuel an extreme lean condition would occur. Water/Meth operates in a totally different manner. There are 3 major benefits to water/meth. A. It cools the intake charge by 60-120 degrees on average, B. It will add as much as 20 points of octane to whatever fuel you are burning, C. (according to snow) The water turns to steam in the combusion chamber, effectively steam cleaning your valves and combustion chamber. Now a water/meth system on a N/A engine will add a small amount of power (5-7%), but the real advantage is what it allows you to do with tuning. If you utilize the water/meth as a tuning element, you can add substantial amounts of power over just pump gas. You can run more aggressive timing curves and more boost if you have a poweradder, that's where the big gains with water/meth are realized. Also, the methanol will burn (that's what adds the octane points) and can, in some cases, be used as an additional source of fuel (We have done this before at Hellion), although it's really not a good idea to do that. Also, Chris you had mentioned earlier that Nitrous on top of a turbo will effectively spool it faster like a bike going downhill, that's sort of true, but it's not as iff the nitrous is spraying on the turbo itself, helping it spin (which really wouldn't do anything). What it does is increase cylinder pressure and cylinder temperature, the factors that just happen to be the deciding factor in how fast a turbo spools. Turbo's don't rely on purely airflow to spool them, i.e. you can put an ENORMOUS fan on a turbo, and it won't spin very fast at all, but put compressed air through it, and it'll spin much faster. Pressure, Velocity, and Heat are the 3 factors that determine turbo spool time. This is why when there's more load on an engine, a turbo spools faster, because the greater load brings with it higher cylinder temps and more cylinder pressure. Also, compound systems, when properly setup and and researched can make enormous amounts of power, more than comparably sized twin or single setups. But, and it's a big BUT, they will NEVER make more PEAK power. I'll say that again, NEVER MORE PEAK POWER. They make LOADS more average power, but will usually not make more peak power than a turbo alone (comparably sized, obviously) Here's proof. This is Tony Alm form Florida, compound Gt500<img src="http://i27.photobucket.com/albums/c188/grey90gt/TONYALMGT5001200HP.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>