I can't say that I know for a fact, that they haven't already done it. Take one of those expensive Mallory or MSD or Accel dizzys. I'm assuming they've either beefed up the heat shielding or otherwise fixed the problem, because you don't really hear about this problem from the high dollar aftermarket distributors. At least, I've never heard about it in all my days of forum lurking on the various mustang boards. But I really have no idea what they've done to address the issue, if anything. If I ever buy one of those things, I may try to get an answer from them about this, at least so I can know what to expect in the future, once the part has a lot of miles on it and has been through a lot of heat cycles. Perhaps someone here that owns one, could answer. I'm one of those people who don't really have any intention of selling my car. In fact, I intend to buy more mustangs lol. So for me, long term is still something of a small issue. But if these PIPs actually live a long time before they start malfunctioning, then its probably not a really even a concern. It seems odd though, that they die slowly. What is the cause of this? According to this thread, it seems like they can start causing misfires and not actually die. 1. So far, I have only noticed it at ilde. It doesn't seem to be there at higher RPM's than idle. 2. I might go ahead and rig up my own smoke machine. Been wanting to do it for awhile, now I have a valid excuse to do so. Something like this: https://www.youtube.com/watch?v=J5O5gzIAuhc 3. Just plain Bosch platinum plugs. Gapped appropriately. Unknown on their heat range. 4. As for the MAF meter, as far as I know its the factory Ford one. Definitely not aftermarket. I cleaned it when I did the tune up, about 5k miles ago. 5. Injectors are likely the ones that came with the car. The car is mostly stock, with only a few minor upgrades to suspension. 6. You said "Stk" ignition system, so I'm going to assume you mean "Stock" ignition system. Other than the cap and the rotor and the plugs and plugwires, I'm operating under the assumption that the whole ignition system is stock.