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Message: <blockquote data-quote="Jrgunn5150" data-source="post: 488587" data-attributes="member: 9682">I ran from California, lived in Orange county, worked in Corona, or Riverside county, the "High desert". My car saw tempature changes of 30-40 degrees daily. Altitude changes of thousands of feet. I ran from Ohio, to California, to Michigan, back to California, to Texas, California....It's not where you're at, it's who is working on your car apparently. Houston isn't special, a/f ratio is still a/f ratio, timing is still timing. When you tune a car, and actually tune it (by tune, I don't mean use one of SCT's cookie cutter overlays for a combo "like" yours that they give every shop who buy's Pro Racer), it should run like stock. That means elevation, temp, shouldn't affect it. If they do, it wasn't right to begin with.Think of it like a seesaw... And your engine is a ball... As you drive through changes, the tune rocks back and forth, and the engine rolls around. The tune always tries to rock it to the middle... Now make a seesaw by some asshole who doesn't care, it's offcenter.. The further offcenter it is, the more likely you are to roll the ball off the end.At any rate, from your post, there's more reasons than a tune your car blew up. And high compression and boost weren't one of them.</blockquote>