Re: 2015 Ecoboost Mustang HFS-4 Installation Guide
I just happened to catch the failsafe being tripped on my HFS-4 during a datalog the other day. I have the HFS-4 configured to interrupt the boost control valve and drop boost to spring pressure. I've wondered whether timing would follow, and now I have my answer.
In the boost graph, you can see the abrupt drop in pressure around 6.5krpm; you also see a corresponding drop in timing advance on the timing graph. Presumably the ECU pulls timing when it detects the boost controller being interrupted. You can also see that the engine never knocked on the correction graph. Ignore the blue lines.
Very pleased!
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