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Old 11-05-2017, 03:13 PM
newrob newrob is offline
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Join Date: Apr 2016
Location: Dubai
Posts: 4
Default Audi RS6 - 2009 - HFS-4 install questions

I am just getting around to installing my AM HFS-4 system in to my 2009 Audi RS6.

I wanted to check a couple of items to make sure i don't make any mistakes:

I am planning on installing the nozzles about 130mm from the throttle bodies, approximately where the red arrows are on the drawings. Jut wanted to check if this would be the most optimal place for them.

The white arrows are where a friend has them installed.

Or should I be looking at locating them further back towards the inter coolers?




I also wanted to check the modifications that I need to do to the HFS-4 control ECU PCB based on the RS6 wiring diagram.

1. DI Compensation link (default = unlinked) – any modification needed?
2. DI signal decoder type (default = B) Do I need to cut a link and solder?
3. Fluid Flow sensor signal level scaling (default = unlinked) – any modification needed?
4. PWM Signal level offset (default = PWM (-)) any modification needed?
5. Air/Egt temp. Flow compensation option (default = unlinked) - any modification needed?
6. IDC PRE-AMP: cut x1.0 and solder 2.5 – I don’t have these links, what should I do?
7. MAP sensor type select (default = 2.5 bar) its link on 3, anything need to be done?
8. Flow sensor table (default = unlinked) – any modification needed?
9. Air/EGT sensor selection (default = Egt) - any modification needed?
10. Auxiliary failsafe options (default = unlinked) - any modification needed?




Photo of my HFS-4 PCB

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