6SpeedOnline - Porsche Forum and Luxury Car Resource - FVD Ignition Sensor Holder min.93 Octane Rating

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marcvip

10-25-2008 06:22 PM

FVD Ignition Sensor Holder min.93 Octane Rating

FVD Ignition Sensor Holder min.93 Octane Rating

Questions for a 91 964 Turbo ;

-Should there be any concern about engine knock by increasing the ignition timing across the rpm range by 6.5 degrees?

-Would 93 octane be enough to prevent any risks on a 1+bar setup?

-Installing Knocklink or an aftermarket knock sensor may be necessary?

Ag02M5

11-22-2008 08:13 AM

Quote:

Originally Posted by marcvip (Post 2104046)

I researched this a bit. Most thought the gain wasn't worth the risk.

marcvip

11-23-2008 05:25 PM

Apparently the oem ignition advance is 40 deg from 3000 rpm upwards at 400 mbar ( no boost) and 21 deg. at 1.750 mbar (boost). It is an increase of 6.5 degrees across the rpm band. Can anyone with tuning experience chime in?

marcvip

01-20-2009 07:53 PM

bump

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