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Re: Downsides Posted by John Williams [Email]  (#1982) [Profile/Gallery]
(more from John Williams) on Fri, 9 Nov 2007 16:03:56
In Reply to: Re: Downsides, Kent, Fri, 9 Nov 2007 10:55:19 Members do not see ads below this line. - Help Keep This Site Online - Signup |
You can run more boost because you now have a chemical ic that lowers the intake charge temp. Even if the turbo was a little out of its efficiency range, the water/methonal is going to cool that charge, but its really not necessary to run the turbo out of its efficiency range.
50% power increase comes from denser cooler air charge. The other"50%" of the power increase is because w/m allows you to run more timing because the methonal has increased you're octane level to a higher limit and this means you can run more timing. The Knock level and timing are limited by the fuel octane, the higher the octane, the more timing you can run without knock and the more power you can make. Problem is if you run out or you're pump dies and you have you're ecu mapped for higher timing, it could crack a piston!
I have the snow performance and the gains are minimal with no changes to the ecu or the timing. Maybe 25-30wtrq gained, lost 5whp. With timing changes from Jak, I gained around 40whp and 50wtrq. Car was much faster, but its mapped different in the timing and I am not sure if it could retard enough if my system quite working. Snow performance does sell a waste-gate set-up that will dump boost if the flow is not maintained. They also sell low w/m bottle warning float level system. Many guys use the washer bottle because it holds a gallon and has the low washer level built into it...
It did make a big difference at altitude in Denver. I like the system, but there are dangers as pointed out above.
The best way to do it is start increasing you're timing in 3 degree intervals on the dyno until you make no more hp, then back it off to the last setting where you had gained hp. At some point, more timing will not help anymore....
John
posted by 67.174.184...
, Tue, 13 Nov 2007 12:01:48, Fri, 9 Nov 2007 16:03:56 <-- Viewing This Message
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