[Tcoat]

Originally Posted by mrg666

You know that gasoline engine rated for XXX HP does not run at XXX HP always. If you boost the engine to XXX HP and do street driving only, it might very well be okay. If you drive it on track frequently, it fails much sooner. So, the answer is "it depends". Every engine is different and when you are pushing design limits and deviating from the standard equipment, those differences are even more important. If you are boosting the engine, you are rolling your dice. Don't believe anybody if they say their engine is fine. If you had asked what supporting mods are important for the reliability of an engine boosted to a specific level, that would be a better discussion. Then, we could discuss the driving conditions, boost level, and corresponding modifications like oil cooler, catch can, radiator, forged pistons and rods, injectors, fuel pump, etc.

Now, if I say my engine is fine for street driving at 7-8 psi boost with a standard JRSC (factory tune), oil cooler and catch can, will you care? I rolled my dice and I am happy with it

It all boils down to risk and what any individual considers to be an acceptable level of it. Any change increases the level of risk. There are things you can do to mitigate some of that risk but it still increases. If a person understands the level of risk that doing or not doing something will create and can live with it then all is good. If they do not fully understand or push things above the level they are willing to accept then they will have a bad time when something goes wrong.
Contrary to popular belief there is very little that angers me but guys that push things too far, blow up an engine and then then whine and cry about it while trying to blame everything and everybody but themselves just pisses me off to no end. I just want to shout "You had to know you were raising the level of risk so what the hell is your problem now"! Don't even get me started on the ones that do it and then say "I am going back to stock for warranty".