Quote:
Originally Posted by sjf911
I am running a CoolingMist system for injection with a single injector at the outlet of the intercooler proximal to the throttle body. I am running a speed-density EFI so I don't have a "barn door" AFM (MAF) to worry about. Ideally, you would like to have an injector for each cylinder or, at least one for each half of the intake plenum. It is a much greater challenge installing injectors on the intake manifold than on the intercooler piping though. I feel I get better atomization and more uniform distribution of the methanol where it is currently located. It has cost me one MAP (manifold absolute pressure) sensor already as my MAP sensor was located in the ECU and was siphoning methanol. I have since moved my MAP sensor into the engine compartment at a level above the throttle body.
My methanol injector system is only a 2-D map based on boost not load. It has the capacity for 3-D mapping but I can't get an analog 0-5V load signal out of my ECU like what comes from your AFM. I have plans to add a hot-wire mass air flow sensor (MAF) in the future to give me the 3-D capability. The other alternative is to go with MS3 control of the meth injection directly but I already have the CoolingMist controller wired in.
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Thanks again for the great info! For now, I'm planning to go with the single injector in the charge pipe in order keep this within budget. I was running OK without an I/C or water/methanol injection before, so I'm viewing this as added insurance.
Right now, I'm thinking about going with the Snow Performance Stage 3 Boost Cooler. The software creates a delivery map based on boost and/or injector pulse width. This sounds like a nice upgrade over systems driven solely off of boost, as it gives you more flexibility to dial in the injection and prevent soak.
Thoughts?