Quote:
Originally Posted by Codey
ahh ok, I think I have been going about this the wrong way, is the aim to use as least water as possible to get the desired ACT, any more water after that will lose power?
I've just received my parts from ERL, so I can now start with a .4mm jet pre compressor and a 130cc/min jet post intercooler
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No offence to anyone , but I think you are doing too many things at once.You need to decide why you are wanting to use water injection .If its for cooling to control high IAT's thereby reducing detonation , then water ONLY is more effective at doing this.If you are at the limit of your fuel system and you need to use some methanol to "bring Back" your a/f ratios , then a 50/50 mix is good . What ever you decide to do , you have to consider that a bit of tuning is required to see gains , but the least amount of changes you make to your maps the safer you will be if your WI system fails (ask me how I know this). if you have to lean out your maps too much or run too much ignition, then you are spraying too much water.
In my experience , water works best because of its cooling properties ! Infact since water has four times the cooling ability of methanol , you would need substantially less (1/4 the amount compared to a 50/50 mix) !! All that is required is leaning out your maps to where they should be and advancing ignition timing not more than 2 to 3 degrees at any one point .I usually stick with the lower number for safety reasons. After you have played around with this you should see some decent gains ,if not then go bravely into the world of methanol injection .