You dont have anything to be sorry about, i dont mind if you agree with someone that is wrong, you both are wrong. If you knew what you were talking about that would be one thing, but since there isnt even a 3" inlet option its kinda obvious you dont. And like i said, im not going for a 600whp accord with a spool up that would be in the 5500-6000rpm range, im going for a 400whp car that has very quick response and spoolup in the 2800-3400rpm range. Bigger piping, in this case 4" piping is the next step up, would kill my spoolup probably by 100's or even a 1000 rpms. This is the reason most people that have good setups just wait until they're done with there project before they post stuff on the internet. Because people think that have never built an engine tell them that they know whats best for their own projects. Oh, and the reason the people that listen to other people on the internet have crappy setups. ex for sherwood: retroshark on everything-honda, which i said over a month ago would have a broken car now look at his car.

Edit: Forgot to mention, a 3" dp is different tho. It wont effect spool up time, but will increase top end hp. I actually will have that, and a 3" exhaust setup. This is reduce a chance of backpresure surge and will help the exhaust exit easier. Or i might go with a 2.5" exhaust with a cut-out and keep my car looking stock. Either way, it will greatly increase exhaust flow.