Originally Posted by KMPrenger
I understand that. I'm sure that is the reason. It just seems crazy to me that they can't just add a couple psi of boost and be done with it and still maintain basically the same reliability, emissions, and fuel efficiency.
Well ... if they could increase output without harming reliability, emissions, and fuel economy (among all the other factors that they keep in balance) I'm sure they would. Better engine, with no sacrifice? Awesome, who doesn't like a free lunch. But since they don't do it, I'd say its a safe bet that adding 'just a couple' psi of boost would have enough of an impact on those other things to break at least one of those 'rules'