Which Aquamist WI kit do most folks have here ?
07-02-2003, 07:55 PM
#26
Richard, when did I say anything about the 1S running off of anything, anyhow?
I didn't. I did say I do feel the 2d is the wrong setup for our cars.. So I'll add the following,
"the 2d is not well suited for the current tuning of the S4 out of the box", "you would need to be really selective on your Jet sizing, since the 2d follows the injector duty cycle you can cause misfires and stuff since your injecting way too much water into the system"..
And as Funk said, maybe those jet sizes you listed are fine with a weak 60 psi pump, but the big boys all run 100psi
Lets be friends! I like that you care about your customers, I don't agree with certain things but how you treat your customers and the care in your installations speaks volumes to me!
Tory
Can I get away with that?
And I still think a solution you build yourself is better then getting raped on a 1s system. There is a reason most of the fast camps build their own!
"the 2d is not well suited for the current tuning of the S4 out of the box", "you would need to be really selective on your Jet sizing, since the 2d follows the injector duty cycle you can cause misfires and stuff since your injecting way too much water into the system"..
And as Funk said, maybe those jet sizes you listed are fine with a weak 60 psi pump, but the big boys all run 100psi
Lets be friends! I like that you care about your customers, I don't agree with certain things but how you treat your customers and the care in your installations speaks volumes to me!
Tory
Can I get away with that?
And I still think a solution you build yourself is better then getting raped on a 1s system. There is a reason most of the fast camps build their own!
07-02-2003, 08:58 PM
#27
The higher pressure pumps atomize the water better, creating more surface area to absorb the heat.
There is a reason why ERL decided to use such a high pressure pump. They found that lower pressure did not allow the jets to create a fine enough mist to be as effective as 6 bar would be .
The ERL pump produces up to 250 psi, not 60 psi as you mentioned.<ul><li><a href="http://www.aquamist.co.uk/cp/sys1/techsys1/pump.html">Pump specs</a></li></ul>
The ERL pump produces up to 250 psi, not 60 psi as you mentioned.<ul><li><a href="http://www.aquamist.co.uk/cp/sys1/techsys1/pump.html">Pump specs</a></li></ul>
07-02-2003, 09:13 PM
#28
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That's a bit of water, but you're the one who's tested it. Have you guys spent
any time logging or dynoing various jet sizes? I'm gonna be running at 100psi(bit more than the 6bar), but I'm starting small and logging and tweaking as I go. We'll see how it goes, its all fun. ;-)
07-02-2003, 09:14 PM
#29
I don't get your post.
Are you saying the ERL pump does not produce more than 60 psi? Are you saying the jet sizes I recommend are too large? I use them almost all the time with great results and no misfires.
Please clarify Tory.
Please clarify Tory.
07-02-2003, 09:20 PM
#30
No dyno runs, but...
I have logged timing advance and other factors on several other cars(as well as the S4) with similar compression, potential cfms and displacement.
The largest jet you can run on the 1S is a single .9- 1.0 jet. Any more jets and the pressure drops too low and the mist becomes droplets.
With the 2d, you have a high speed valve and accumulators wich allow you to run up to two jets that size.
Now, I've tried two .9 jets on a KO4 S4, and at that point I've noticed some stumbling at partial throttle, but none at WOT. I've ended up with two .7 jets on most KO3's and two .8's on KO4's with absolutely no stumbling and maximum advance.
The trick is to set the boost switch for the right amount of boost before the WI is activated.
BTW, my VR4 need two pumps and four .7 jets to get the most out of WI. That's a lot of freaking water, but it really makes a huge difference in my 1/4 mile times, and it allows me to run 20 psi to redline without race gas.
I have two jets before and after the IC's.
The largest jet you can run on the 1S is a single .9- 1.0 jet. Any more jets and the pressure drops too low and the mist becomes droplets.
With the 2d, you have a high speed valve and accumulators wich allow you to run up to two jets that size.
Now, I've tried two .9 jets on a KO4 S4, and at that point I've noticed some stumbling at partial throttle, but none at WOT. I've ended up with two .7 jets on most KO3's and two .8's on KO4's with absolutely no stumbling and maximum advance.
The trick is to set the boost switch for the right amount of boost before the WI is activated.
BTW, my VR4 need two pumps and four .7 jets to get the most out of WI. That's a lot of freaking water, but it really makes a huge difference in my 1/4 mile times, and it allows me to run 20 psi to redline without race gas.
I have two jets before and after the IC's.