Electromotive Twin Plug Options

[Rich76_911s]

Hey guys,

I wanted to ask if any of the older electromotive twin plug systems have a function to retard timing under boost conditions. I read somewhere that Richard Clewett says they no longer make the MAP sensors that work with the old stuff. Does anyone know if this is true or not?

In my dream world I'd like to follow Jacob's lead and utilize an XDI2 system to firing twin plugs, but the budget just doesn't allow it right now.

So I was wondering if something like this could be used as a stop gap between now and when I have more budget room for the xdi2 setup.

http://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/932075-electromotive-twin-plug.html

[WERK I]

This is true.

I have been using the HPV-1 for a number of years now without a MAP kit. However, you can still use the old vacuum sensors that were used before MAP. This will allow the HPV-1 to advance timing under vacuum and once the manifold pressure goes positive, the HPV-1 will resort back to the ignition curve settings set by the user.
These sensors are plentiful as weeds and can be obtained from salvage yards. Give Richard a call and ask him which ones he recommends. I believe it is a GM unit.