The logic in going to a "warning" rather than a "control" strategy was that, unless you develop a fully adaptive ECU (as in the new age cars), you always are left with the problem of how and when do you reinstate the ignition timing that has been removed without then consistently repeating the det condition.Assuming that the car was mapped correctly originally, then you need to remove the root cause of the det before reinstating the timing.For this reason we felt that a warning system was safer, and even with a "control" system in place we would intend to retain the "warning" system.

You could argue that the early OEM ecu with a limited "control" strategy and no warning gives rise to the very problem I have outlined above.Det is detected and driver is unaware of det > ign reduced for a while > dets again > repeat until engine lets go! We stress to all our customers the significance of the CEL flashing; it is natural that this may be queried once it happens but that must be better than blissful ignorance.

I do take on board your comments Duncan and would only disagree in that I think the SimTek is already "cracking"; it will be "cracking plus" when the next upgrades are released!

Steve S