honest opinions about this article ??

BalanBro

Not necessarily. There is almost always a good bit of headroom in modern engines. It's just that some folks expect too much and start thinking that 12 psi on stock motor with cast pistons is safe. If they have a good tune and stick with the wastgate spring (7-8 psi), modern motors hold up just fine.

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2012 Mercedes C63 AMG P31 Sedan, ROW, aFe, Eurocharged Dyno Tune. 438WHP/415WTQ
2010 SOLD: 40th Anniversary 370z

Red__Zed

Most modern motors don't really have much headroom, and there often isn't aftermarket support for modifications. Even if there is, there are usually severe limitations with nearly every component along the way. It's a pretty big deal to be able to buy a car that doesn't require replacing the trans, rear end, etc, along with massive headwork, just to get decent FI numbers.