Ignition retard knock sensor.

[David Piper]

>Although the MSD also has the advantage of a much hotter spark and
>is something I want to upgrade eventually anyways I'm not sure how much
>I want to retard ignition across the board based only on boost level.

I use 35 deg total w/ my MSD TTM retard 0.35 to 0.45 deg/psi boost.   Motor
is Nissan L28 custom turbo w/ alum heads, turbo cam, EFI, Intercooling and
8:1 CR.  Need 30% race fuel above 12 psi steady state.


TurboDave