This is unnecessary stress, and I feel ya. I've never driven an SC'd Z, so I don't know what it feels like. At least 450whp from 260-280 whp is great especially if you get it to sound great with all that power. What's nice is that you don't have to mash the throttle and drive wreckless to enjoy the sound and feeling. With my car half throttle in 2nd at 5 PSI doesn't sound like much, but it's enough to have fun and be safe. On cold days, that's enough to fish tail.
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