OK, first of all Corky Bell is a well known third rate engineer who doesn't know what he's talking about and is usually wrong. He's a shady businessman (place an order for a turbo kit, wait a year to get 2/3rds of the kit and then nothing else not even support), a theif (Allen from the jyturbo list loaned him his NSX Helms manual, and then Corky went out of his way to avoid him when any attempts were made to collect it. It's a $60 book, wtf is that shit?), and have I mentioned he's usually wrong? Read the first fucking sentence of Maximum Boost, he goddamn contradicts himself. The first fucking sentence.
You need to refer to the back to back tests done on HT in '02-03 where Full Rice Geoff claimed that the less restrictive bar and plate ICs (you got it backwards, BTW) would make more power with equal cooling. Come to find out he was off by something like 40-60 whp at the 500 whp level, and the more restrictive IC did a far better job of cooling since it had actual surface area with which to enforce thermal transfer. It was a fine moment in bandwagon tail tucking history.
Who do you believe, (Corky) a man who makes a living hyping himself with nothing tangible to show for it much less a good name, or (me) one of a couple hundred reasonably intelligent dudes across the country with access to a dyno and a litle experience?