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Old 24-10-2017, 09:28 AM
MiztahSparklez MiztahSparklez is offline
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Join Date: Jan 2017
Location: San Francisco
Posts: 16
Default Re: Hfs-4 wiring for Audi B8 s4 3.0 (2009-2013)?

Quote:
Originally Posted by Richard L View Post
Have you match up map sensor range with the under-board MPS solder link?
It is currently set for 3 bar. (This is a v1 controller).

I may try to reflow the solder. Perhaps there is a cold joint.

I did another test today, could not get the system to do anything with MPS as the trigger. Zero flow and high boost does not light up. Do you know the range of voltage I am supposed to see from this wire? Maybe I can hook up my multimeter to check if voltage is sufficient.

I can confirm IDC is working correctly. The light progressively goes up with rpm/load. Seems strange though. Sometimes my flow barely reaches 75% at a high rpm. Then other times I can get flow that goes past 100 and the IDC 95 light may even appear.

I think I may take everything apart and clean all the parts as well. I feel that with this setup, I should not be pulling timing the way that I am. Everything just seems very sporadic and not consistent.

Getting the system flowing correctly is the current priority. After I figure it out (maybe even if I need to order new parts), I can work on getting the failsafes in place.
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