Gerard,

This is a bit hard to get your arms around because you can have either;
better fuel economy or better TAS; or a little of both.  Read Klaus' web
page http://www.lightspeedengineering.com/ He shoots very straight.

In my case it took two items which allowed very lean of peak operations.
Both the electronic ignition coupled with ram air pressurized injector
shrouds allow smooth operation deep on the lean side of peak.  This of
course costs a couple kts too.  A third item; a new prop (Catto-carbon) I
think this further improved L.O.P. smoothness (compared to my Hartzell CS)
allowing me comfortable cruise operation.

As far as greater TAS; yes electronic ignition does improve performance.
This performance is touted to be due to improved spark energy while the mag
tends to loose power as we ascend.  Additionally, of course they advance the
timing as MP and RPM decrease.  I can't give good data as I've never run a
mag on my plane.  

Rough idea of fuel savings:  1-2 gph.

Go with the Lightspeed:  I've got 800 hours on a dual set up.  So I guess
I've saved 800-1600 gallons of fuel, :)  I then burned that fuel in races
all over the country :)

Fast or slow, electronic ignitions are very cool.

Larry

-----Original Message-----
From: gerardoconnell@optusnet.com.au [mailto:gerardoconnell@optusnet.com.au]

Sent: Wednesday, July 09, 2008 9:20 PM
To: lml@lancaironline.net
Subject: Mags V Electronic ignition -LNC2

Can anyone provide a rough idea of the performance improvement (TAS and MPG
or fuel flow) expected on the 0-320 after converting from 2 mags to one mag
+ electronic ignition?

With the price of fuel heading North I am wondering if its worth the
investment

Gerard