I run one in my TR6. No problems. Of course it must be wired correctly, as is true with anything electrical. The thing I like is my timing is always spot on, so starting and performance is much more consistent. As with any electronics, they are subject to failure if they get too hot. [Yes, you should not leave the ignition key on without the engine running because it will overheat, but the same it true of OEM electronic ignitions as well]. Same is true of ignition coils. I run a very high output, aftermarket coil, mounted on phenolic washers to insulate it from the heat of the cylinder head. ...J.D.