#1
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Looking to buy an HFS-4, Question on configuration?
Hi,
I'm looking to buy the HFS-4 for my 2007 Mazdaspeed 3. I have to choose between two different vendors. My question is are the HFS-4's universal other than using the diagram for my specific car or does the unit need to be modified (soldered) to work with my application? Or do I just buy the unit from anyone and just install it? Thanks. Rick |
#2
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Re: Looking to buy an HFS-4, Question on configuration?
If you are buying the latest stock, HFS4-v3.1, there is no soldering required. The 2.5x pre-scaler and done by jumper links.
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Richard L aquamist technical support |
#3
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Re: Looking to buy an HFS-4, Question on configuration?
Ok, Thanks. I will make sure I buy that version.
What is the 2.5x pre-scaler? Will the wiring diagram for my vehicle tell me how to set the jumper for that? |
#4
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Re: Looking to buy an HFS-4, Question on configuration?
The 2.5x pre-scaler is for scaling up the duty cycle % of a direct injection engine. The MS3 maximum duty cycle is 30-33% at. This is because fuel is only injected when the inlet valve is shut, duration of spray is limited.
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Richard L aquamist technical support |
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