****, I've only ran 87 octane until about 19,000 miles then I switched over to 93. But I want to do stuff to this car because I'd like to get into cars and well this is how I can but I don't want this car to go to **** on me. Is there anyway lets say a mechanic or dealership can inspect my cylinder walls and piston heads?
If it's under warranty and your only car, then leave it alone. Making horsepower isn't the issue, but reliability is. If there's mods available with warranty like exhaust , brakes, lowering springs, spoiler, etc then start there.
Anytime you increase boost on a turBo car you cut its lifespan in half. My subaru lasted 15,000miles at 18psi on 93oct, my 05 civic lasted 11,000 miles at 6psi.
What the guys who mod their cars don't tell you is that it won't last. I spent over $45,000 in two years on my subaru, then I dumped it. It would go a few weeks, then blow something else up.
So I'd suggest if you want to learn to modify cars, get a second car. Only reason I have a cruze is because I had to roll over my debt from car to car because I keep screwing myself from modifying my daily driver and voiding warranty.
Even if you can make the hp, it costs thousands to make it reliable.