Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?
I can't seem to find the page where the manual says for 2.5 use 3 setting. It may be on one of the earlier manual (pre v2).
- HFS4-v1 has 2 or 3 bar map sensor option.
- HFS4-v2 has 2.5 or 3.5 map sensor option.
If you have a v1, for 2.5 use 3 setting. Hope this clarifies it.
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Richard L
aquamist technical support
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