#511
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Re: Injecting prior to turbo comp' impellers
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We are not talking about any risk of a hydrolock, but it will cause a slight delay on the next injection event where the hoses has to be refilled before pressure is being build up.
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Richard L aquamist technical support |
#512
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Re: Injecting prior to turbo comp' impellers
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#513
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Re: Injecting prior to turbo comp' impellers
Nice HYDE16! Very tidy and clean.
That is lots of piping there. What is the pump's flowrate and pressure rating? What about the check valves, where are they? |
#514
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Re: Injecting prior to turbo comp' impellers
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Pump pressure was tested at 185psi pre-FAV. The check valves are in the jets, they are check valve jets (5 are and 1 is controlled by solenoid) with 15psi cracking pressure. |
#515
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Re: Injecting prior to turbo comp' impellers
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AEM advise to not run more than two nozzles on one single pump due to possible pressure loss. In your case you are using 6 nozzles - 4 Direct Port / 1 Post Turbo / 1 Pre-Turbo. If it was me I would : 1. Try the system off the car 2. Connect all 6 nozzles using the same nozzle rating 3. Direct all nozzles each into a plastic can 4. Trigger the system by a test button or by pressurize the vacuum tubing with a hand pump 5. Leave it running until half bottles are full 6. Switch off the system and leave the mist around the can settle 7. Visually check differences between each container 8. If all the same, empty the liquid and retry for two times to check consistency of the system With this method above you will make sure : 1. The system is working equally on all nozzles 2. Visually certain that all nozzles are seeing good mist 3. Visually certain that there are no leaks before tuning To make this test I would recommend to use only water although that is your choice, just remember misting methanol into plastic containers is possibly dangerous and toxic to breath so keep yourself safe |
#516
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Re: Injecting prior to turbo comp' impellers
The number of nozzles is irrelevant as long as you do not exceed the flow limit of the pump itself.
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#517
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Re: Injecting prior to turbo comp' impellers
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Rich what's your take on the following jets at 185psi pump pressure? Four .6mm CVJs direct port One .4mm CVJ post intercooler/pre-throttle body One .3mm solenoid controlled jet pre-turbo |
#518
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Re: Injecting prior to turbo comp' impellers
This set up is pretty popular on the Mazda and Focus platform. But not as large as your 4x 0.6mm. It allows good fuel supplement on those DI engine without any aftermarket large injectors available.
Certainly a five-jet set makes total sense, Good fuel distribution and ample charge air cooling. The pump can be wound up to 225psi but will compromise the linearity of the system. As the flow increase, the pressure will drop much quicker than 160psi. It is the same as a tall water tank and and short tank with the same capacity, water level drops faster on a taller tank. You can a adjust it to 185- 200psi to offset some manifold pressure. Beyond this is not acceptable. Do you have a logs to post up here? I like to see the STFT.
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Richard L aquamist technical support |
#519
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Re: Injecting prior to turbo comp' impellers
Thank you Richard, I remember we needed to raise the pump pressure to 185psi to meet the demand for this many jets. I have since decreased my 5th post intercooler jet from .6mm to .4mm this weekend since I've been burning out MAP sensors from too much direct contact. When I originally logged the .4mm to .6mm jet change in this location I didn't see any further decrease in intake air temps so at this point the larger jet could have added octane but no more cooling. Now I'm back to .4mm to slow the MAP sensor failure rate. Now, the addition of the 6th pre-turbo .3mm jet is solenoid controlled and will only be on here and there when I turn it on from the cabin. The 185 pump pressure should still be plenty for this configuratation of four .6mm jets, one .4mm jet and the occasional one .3mm jet but I may have to tweak the HFS-4 trimmers a tad based on the software demand. I don't want to have to max the pump out any further for reliability/longetivity.
I didn't run any logs yet as I am currently re-configuring my tank with an in-line master shut off valve (for when I have to quick disconnect and remove the tank from the trunk) and micron filter pre-pump. Today I plan on installing the tank and pump in the car and can finally turn the entire system back on again after the winter months. If all goes well I'll have prelim data logs this week. What did you want to see specifically Rich? What is STFT? |
#520
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Re: Injecting prior to turbo comp' impellers
STFT = Short Term Fuel Trims
Best to be around 5% (negative or positive) |
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