Official Water/Meth Injection Thread
ill go take some pics. so you can see what you think. hang on there....
http://media.putfile.com/engine-bay-of-a-cobalt-ss
^video of how i set mine car up.
https://www.cobaltss.net/gallery/sho...p?i=28325&c=30
https://www.cobaltss.net/gallery/fil...baypics004.jpg
https://www.cobaltss.net/gallery/sho...p?i=28324&c=30
https://www.cobaltss.net/gallery/sho...p?i=28323&c=30
https://www.cobaltss.net/gallery/sho...p?i=28322&c=30
http://media.putfile.com/engine-bay-of-a-cobalt-ss
^video of how i set mine car up.
https://www.cobaltss.net/gallery/sho...p?i=28325&c=30
https://www.cobaltss.net/gallery/fil...baypics004.jpg
https://www.cobaltss.net/gallery/sho...p?i=28324&c=30
https://www.cobaltss.net/gallery/sho...p?i=28323&c=30
https://www.cobaltss.net/gallery/sho...p?i=28322&c=30
Last edited by Johnny B; Dec 23, 2007 at 02:29 PM. Reason: Automerged Doublepost
does anyone sell a kit that is specifically made for the cobalt? im looking for a front mount and would like it to be plug and play. i can do custom things but im that lazy that i would like to not have to do any of it
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Well... this is as good of a place as any.
There is a local discussion going on at the 306motorclub on W/M injection.... one guy made a statement that I think is a good idea for people to read.
For the record the guy name Veris, is a well know local Honda tuner and Hamburgler is a guy runing a modified Snow kit on a turbo DelSol.
In addition to what was said there, it's important that people understand what W/M was designed for.
The point of W/M injection wasn't to increase your octane rating by significant amount or to supply a bunch more fuel, but rather to aid in the cooling of your intake charge, thus allowing more boost (resulting in a higher flow of air).
The water's purpose is to cool the charge... and as we all know, water has the best heat transfer rate.
This is also why running pure methanol isn't the greatest idea... use a mixture, and make sure it's best suited for your application.
There is a local discussion going on at the 306motorclub on W/M injection.... one guy made a statement that I think is a good idea for people to read.
Originally Posted by Veris
Yes it is (a little more then 4% of fuel needs), and that is the point. Use the least amount which lowers intake temperatures, and still allows petro to be [by far] the biggest part of the combustion energy. Pertro generates much more energy.
It is also the amount sno performance suggests. I didn't pull it out of the air...
If you were running a LOT of boost and are really knock limited I'd possibly run twice that for octane benefits as Hambugler suggested, although I'd still tune for 12.5:1 off mix. Although even with a 10% mix you are only looking at a 2.5 point increase over premium. You'd be better off to go to Husky or Mohawk and put in 94. If you used both for octane/timing gains I'd see some worth. Especially if those timing gains where larger then a smaller mixture. A high boost system requiring a very large ignition retard could be such a situation.
The octane gains really aren't that huge. 24 points if you are a 100% mixture. 6 points at 25% mixture, 2.4% at 10% mixture, etc. The real gains are from lower intake temperatures when they were previously ridiculous and knock inducing.
I've tuned a couple cars with meth injection. A .5 mixture made way more power then the much higher mixtures. When both cars came to me, they were using close to a 2.5 (25%) mixture. They were slower then lower boost running all petro.
For install work I don't know who I'd get to do it in town. I've never seen a P+ install so I can't comment. I have seen a GSS install, being that they are the "meth dealer" in town you see a lot of their work. It doesn't pass SIR tech. re: fuel lines and fuel cells
Hamburglers install above should pass tech.
It is also the amount sno performance suggests. I didn't pull it out of the air...
If you were running a LOT of boost and are really knock limited I'd possibly run twice that for octane benefits as Hambugler suggested, although I'd still tune for 12.5:1 off mix. Although even with a 10% mix you are only looking at a 2.5 point increase over premium. You'd be better off to go to Husky or Mohawk and put in 94. If you used both for octane/timing gains I'd see some worth. Especially if those timing gains where larger then a smaller mixture. A high boost system requiring a very large ignition retard could be such a situation.
The octane gains really aren't that huge. 24 points if you are a 100% mixture. 6 points at 25% mixture, 2.4% at 10% mixture, etc. The real gains are from lower intake temperatures when they were previously ridiculous and knock inducing.
I've tuned a couple cars with meth injection. A .5 mixture made way more power then the much higher mixtures. When both cars came to me, they were using close to a 2.5 (25%) mixture. They were slower then lower boost running all petro.
For install work I don't know who I'd get to do it in town. I've never seen a P+ install so I can't comment. I have seen a GSS install, being that they are the "meth dealer" in town you see a lot of their work. It doesn't pass SIR tech. re: fuel lines and fuel cells
Hamburglers install above should pass tech.
In addition to what was said there, it's important that people understand what W/M was designed for.
The point of W/M injection wasn't to increase your octane rating by significant amount or to supply a bunch more fuel, but rather to aid in the cooling of your intake charge, thus allowing more boost (resulting in a higher flow of air).
The water's purpose is to cool the charge... and as we all know, water has the best heat transfer rate.
This is also why running pure methanol isn't the greatest idea... use a mixture, and make sure it's best suited for your application.
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From: nowherevelli
If meth adds octane could one run meth to hit the 100 octane tune on the Stage 3 pcm? Seems like this would be a better option than running off to get race gas. According to the above post 50/50 would be 12 octane, I run 93 right now so that would put it at 105.
If so could one run this in conjunction with the 50 dry shot?
Using the Stage 3 PCM would this be a pretty safe setup?
If so could one run this in conjunction with the 50 dry shot?
Using the Stage 3 PCM would this be a pretty safe setup?
Last edited by thefictionwelive; Feb 11, 2008 at 04:16 AM.
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