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Where are the PMW vs PPS logs
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05-20-2011, 04:39 PM | #111 | |||
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hmmmmmmm |
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05-20-2011, 05:53 PM | #113 | |
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05-20-2011, 05:56 PM | #114 |
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Speaking of which, has Cobb ever indicated that they could monitor ignition in all 6 cylinders or if it is even possible? I know the Procede JB4 and BT cable monitors timing off cylinder 1.
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05-20-2011, 06:36 PM | #115 | |
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05-20-2011, 06:57 PM | #116 |
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Like dzenno said, a good example is how fast the dme throws an underboost code when your charge pipe blows off.
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05-20-2011, 08:48 PM | #117 |
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05-20-2011, 09:13 PM | #118 |
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If anyone cares, water/methanol is usually considered a compressible fluid.
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05-20-2011, 09:33 PM | #119 | |
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Umm... technically water is compressible, but compressibility of water is small. An increase of pressure by 1 atmosphere (= 1013mbar = 14.7 psi) causes a decrease of the water volume by 5.3*10-5 of the original volume. I was unable to find a compressibility index for methanol, but... it's not going to be significantly different.
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05-20-2011, 09:47 PM | #120 |
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I am merely talking in theory of course. As long as the stock fault detection is the same, I think it'll work well, but we'll see.
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05-22-2011, 01:52 AM | #121 | |
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Last edited by OpenFlash; 05-22-2011 at 01:59 AM.. |
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05-22-2011, 09:27 AM | #122 | |
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Shiv/Vishnu - the time you are spending on responding in ALL of these threads is better spent doing the side by side testing on the same car. I also want a delivery date on when we can purchase this kit.... Robert told me in a phone call this was last week in APRIL.
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05-22-2011, 09:57 AM | #123 | |
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The thing is, what Shiv seems to do is overcomplicate everything and that leads me to worry that it will not be reliable. The simple things work best. That said if Shiv wasnt pushing the bounds of overcomplication we might not have come up with some of the things we have. And i would press on to say things we will have. so i thank him for his overindulgentses..lol |
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05-22-2011, 01:30 PM | #124 | |
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It's actually FAR less "complicated" than a traditional PPS system. There is virtually no additional wiring/circuitry (no pump controller, no failsafe electronics). Just a mechanical relay that triggers the pump via mechanical pressure switch. The flow sensor is a mechanical device which reads turbine RPM via hall effects sensor just like a crank position sensor. The meth valve is PWM control liked a fuel injector or boost control solenoid. That's it. And since the meth hardware comes from Aquamist, it's going to be dead nuts reliable. The whole idea behind this system was to simplify the system as a whole, remove various points of potential failure and to improve hardware quality/functionality. By comparison, a progressive PPS system has a meth pump controller box which reads a boost signal that is routed from the front of the car and outputs a very high output PWM signal to dictate pump speed. Another output that triggers an on/off solenoid to reduce dribbling. With meth being routed through a failsafe box that isn't 100% meth compatible and will degrade/fail over time- even with 70/30 mixtures of meth/water. With the failsafe outputting a converted 0-5v signal representative of meth flow, behind feed to the tuning computer for it to adjust boost/meth accordingly. Which approach seems more reliable/simpler? Shiv Last edited by OpenFlash; 05-22-2011 at 02:34 PM.. |
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05-22-2011, 02:31 PM | #125 |
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Yea it's not complicated at all even my girlfriend understands how it works and the concept behind it. Took her maybe 3 min.
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05-22-2011, 02:38 PM | #126 | |
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Mike |
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05-22-2011, 02:50 PM | #127 | |
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LOL. "No complaints but..." I would say that the man has stepped up pretty well here, if he produces results as promised. If you would like to run the test differently, why don't you run one of your own, when your kit is ready, given that you are certain of its equity, and you stand to profit from such equity?
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05-22-2011, 03:40 PM | #128 | |
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Last edited by jippii ensio; 05-22-2011 at 03:54 PM.. |
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05-22-2011, 03:48 PM | #129 | |
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Introducing other than boost only management parameters is a refinement. Last edited by jippii ensio; 05-22-2011 at 03:59 PM.. |
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05-22-2011, 04:02 PM | #130 | |
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After I test this configuration, I will test with the Procede driving the pump directly (through mosfet and rectifier diode) with will eliminate the need for the pump controller and the vacuum/boost signal. This is more "cutting edge" than any PPS based system currently available. At which point we will test the respective benefits of metering meth by PWMing a solenoid or by PWMing a pump. Last edited by OpenFlash; 05-22-2011 at 04:08 PM.. |
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06-30-2011, 03:52 PM | #132 | |
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Sorry but lack of data only leaves me thinking the test was done and the results did not come out as fruitful as you wanted it to be.. |
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