JWG

any significant heat compared to the engine itself.

Thus, I cannot see how the coil pack will cause engine over heating which in turn melts the coil packs internals.

Assuming you meant to say the ECU causes the engine to run hotter, again, the cooling system should keep the engine within specifications. Our cars have an overbuilt cooling system. Given a properly functioning cooling system, the ECU will not cause any over heating. Our A4's cooling system should keep any chipped engine within specification since it does a wonderful job even on the 300+ hp upgrades that some individuals have installed.

Sourdough Josh

Dude, I never said this was my theory. I think it's full of crap. I was just answering Kris' Q.

WJM

it would...
by pushing more air, your are working the ignition system harder. Therefore, you coilpack may work fine, if you were only running 8psi.

Greyhound Guy

Tuning obviously creates a higher stress on numerous parts. This will cause marginal parts to fail before the calculated time. When most things are designed, there is a trade off between cost and longevity. Tuning causes more parts to fail before warranty periods are up. These parts would have failed anyway, just later on.

WJM

accelerated loads will shorten that life