Ok, to clear up some confusion here, there is only one 6AL-2 and it is
programmable. MSD first produced the 6AL which was a non programmable
ignition system that has been used on more street cars than any aftermarket
ignition ever made. 6 or 7 years ago MSD took the 6AL platform and designed
a new programmable version that was called the 6AL-2 Programable the
actual MSD model number of the 6AL-2 Programable is the Model 6530.
The original MSD 6AL was a stand alone ignition and there were components
you could buy like the BTM (boost timing master) that you could use with the
6AL to manually manipulate boost by setting abjustable knobs on the BTM.
The Model 6530 or MSD 6AL-2 Programmable is a completely new controller
that allows the user to program a timing curve and a boost curve with a
computer. A MAP sensor is required with the 6AL-2 Programmable so the
boost signal can be converted to 0-5 volt signal that the controller can use
to allow programming of a boost curve. So with the 6AL-2 you can program
a timing curve by degrees of timing and program boost by psi. This
combination of programmable timing and boost allows the user the ability
optomize timing for best performance while adjusting boost to contriol
detonation.
My coil is the MSD 8702 and is mounted on the fan housing where Porsche
originally had the stock coil. I did have to modify the bracket some to set the
MSD coil further down the fan housing.
Hope this helps everyone and I would suggest you go to the MSD web site
and download the MSD 6530 installation instructions as this will give you a
lot better understanding of how the 6AL-2 works.
"The Old Sled"
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Cole