86Tony: At top rpms? Very probable. Shorter runners hint for that. But will it have biggest gains area under curve? Imho less probable. How often/long on average do you spend (even on track) at 6500-7500? Yes, it might be very track/gearing specific but my very wild guestimate is that "averaged" header like A250 may bring more average gains at average tracks one sees. And if daily driving is considered, then nothing will beat A350/CS400. That "most power" will mean nothing but bragging rights with dyno numbers, if you don't drive mostly at header's narrow optimized rpm range and actually use that more then for brief second before upshift. And that needs specific tracks and good skill-set imho. Not everybody is like CSG Mike, after all
