I attest that, if using Slick 4373 and Slick 4370, the Autolite UREM37BY
work extreemly well.  The Champion REM40E on the same Mags run ok, but the
engine "purrs" using the Autolites.

I have been doing a lot of musical plugs over the last month and have noted
this difference.

I am currently running the Autolites on the top 4 cylider positions driven
with the Slick 4373 and Denso IK27 Iridiums on the bottom positions driven
by the E-MAG.  Only have 3 flight hours on this combo, but Engine is running
very strong and cooling very nicely in climb and cruise.

Why the Autolites work better is found in their literature, in that Unison
contracted with Autolite to produce the product that would optimize the
Slick Mag and Harness.  It was a one sentence reference, but that is all I
have to note as being the difference.

I did put 8 Champion REM40E in all positions on both the 4373 and 4370 Mags
and the "purr" was missing in each test.  They ran the engine ok, but there
was a difference.

The engine is a Lyc 320 with 9:1 pistons and Airflow Performance fuel
injection.  I am using a Rod Bower designed induction that is clean and
simple.  The Prop is MTV-12.

Jim Auman
N235WC  235/320