Unusually low ignition timing

FlashPro questions & answers specific to the 2006-2011 Americas Civic Si
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Scuderia
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Joined: Mon Mar 23, 2015 12:44 am

Unusually low ignition timing

Post by Scuderia » Mon Apr 03, 2017 8:00 pm

Anybody ever tune a car that required unusually low ignition timing? This a completely stock FG2 with 48K miles, and I have to run really low timing, to avoid knocking on California 91, but the car still runs great. I'm still making around 185 to 190 WHP and I roughly get an extra 20 miles per fill up vs Honda's calibration. So I'm not complaining, just curious what could be causing this.

With the factory calibration and using CA 91, it will run 100% knock control, and with VP 100 octane it will run 35% knock control. I never got a CEL running 91 BTW.
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OwenKer
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Joined: Wed Jul 19, 2017 4:27 am

Re: Unusually low ignition timing

Post by OwenKer » Tue Jul 25, 2017 11:20 pm

That's strange Scuderia, I wonder what the reason for the low timing is?

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Spunkster
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Re: Unusually low ignition timing

Post by Spunkster » Wed Jul 26, 2017 9:24 am

You need to determine if you are getting actual knock or false readings. You may just have other noise which is causing the issue or a faulty sensor.

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