#11
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Re: Audi TT RS - Aquamist HFS-4 questions
Sorry, have been watching the Olympics at weekend. I get on to it immediately.
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Richard L aquamist technical support |
#12
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Re: Audi TT RS - Aquamist HFS-4 questions
This is reasonably accurate.
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Richard L aquamist technical support |
#13
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Re: Audi TT RS - Aquamist HFS-4 questions
WMI finally installed and is working perfectly
I used water and ethanol (ethyl alcohol) --> 55% ethanol. I placed the nozzles just before the throttle body as the intercooler hose is too thin (I ordered Forge intercooler hoses and waiting for them to arrive). The gain in power (after increasing the boost and advancing timing) is about 10% and the car feels great but I think that more can be extracted so please help me with the following questions: 1) Currently I don't see any drop in temperatures (I see 25~30 grd above ambient temperatures on high pulls) compared to when the WMI is not used. Do you think that using methanol instead of ethanol will help cooling down the air charge? 2) If I move the nozzles on the intercooler exit plate as marked in the picture (or on the hose that connects to the intercooler exit) would it help with cooling down the air charge? 3) I noticed that with the gain knob in the middle I sometimes encounter some hesitations (the boost is reduced or at least it behaves like this). If I rotate the gain clockwise everything is ok and the car accelerates without hesitations. This behavior comes from reducing the flow or what would be the reason? 4) What is the role of the gain knob? 5) My car makes a maximum 1.5 bar at around 5000 rpm and then it drops constantly until 1 bar @ 7000 rpm. Should I alter the Boost/IDC knob or leave it in the middle position? 6) When wmi is turned on but I drive normally without accelerating the car the display behaves like in the movie: http://s1244.photobucket.com/albums/...MI_problem.mp4 Is this ok? I attached the final diagram received from you in case someone will need it: http://i1244.photobucket.com/albums/...iagram_v02.gif Last edited by cipsony; 02-09-2012 at 09:14 AM. |
#14
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Re: Audi TT RS - Aquamist HFS-4 questions
Sorry for the late reply, busy time of the year for me.
Ethanol + Water injection: 1) Rate of evaporation reduction will depend on the boiling point of the injectant and inlet air temperature. Also the response time of the sensor. Thermocouple is the fastest and most accurate than the thermister based sensor used in car. Thermister is slow and often being heat soaking by conduction to the surrounding masses. 2) This is the most ideal location, please do it. Ample time to mix and evaporate. 3) The hesitation may be be link with the lean AFR. Reducing the boost will also reduce the water/ethanol injection. It is just a guess. Try moving the PI-R trimmer to the left to increase flow by boost. 4) the gain knob is for rescaling the input signals to attain full scale response of the system. 5) You need to make some experiment on this one. It all largely depend if you want to add more water/ethanol in the mid range. 6) It appears you have a longer than necessary distance between the FAV and nozzle. The initial ramp is most likely to be due to the action of expelling the air inside the hose.
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Richard L aquamist technical support |
#15
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Re: Audi TT RS - Aquamist HFS-4 questions
Quote:
According to the TT and mk5 GTI forum. |
#16
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Re: Audi TT RS - Aquamist HFS-4 questions
I took them off wikipedia, please correct.
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Richard L aquamist technical support |
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