PCA SDR

After reading about the potential advantages of this system, especially giving more power at lower rpm (<3000) I'm thinking about putting this in my '78 911SC to replace the stock CDI box. Does anyone have experience with the 6AL or better, the newer 6AL-2? Also I've read that you should replace the coil and get shielded spark plug wires as well as the tach module - any advice on that? Finally, what shops in San Diego have experience installing these? I have read horror stories on the internet of poor installations with arcing wires, engine cutting out at higher rpms, etc. Any advice or experience you've had would be greatly appreciated!

-Bill

Bill

I have installed a bunch of these and several on 911SC's.
Yes, there are lots of things you can do wrong in the installation to cause problems.
most of the issue are with proper connections and wire routing.

You only need the unit, a special distributer connector and a new coil plus a few special connectors to get the job done.

This is a common upgrade for 911's so the other shops you find listed in the WW could perform this updrade as well.
Just make sure you choose someone who has done 911SC's before as they require a few different connectors and wiring techniques.

Bill,

I have one and it is terrific. Lots of pull at the bottom.
Good bang for the bucks.

I never used an MSD box on a Porsche but I used to run these on ALL of my muscle cars. A high flow air filter and an MSD ignition were always the first two things to go on.

Bill,
There is some question about the plug gap with an MSD.