Frank,
this sounds great.
I'm a little confused however, because I thought cats required lambda probes integrated with the ignition system to advance/retard timing, and also to potential control mixture if a FI engine.
How could I make use of these on a carburated engine, what else do I need to change, and what sort of ballpark figure would this likely be ?
Sorry for so many questions.
I should add I'm a big block user too, so does that rule me out for being able to use them ?
Many thanks,
John.