You're confusing "redline" and "rev-limiter"
Redline = The maximum RPM number where all engine parts are within their design parameters. Exceeding the redline will stress parts beyond what they were meant to take. To increase the redline on a stock engine, you will have to replace or modify the weakest parts. On a H22A that is generally considered to be the connecting rods and the valvetrain.
Rev-Limiter = A control mechanism which attempts to keep the engine from going beyond a pre-set RPM. It does by either cutting off fuel or spark at that point. It's often set just a little beyond the engine's accepted Redline; generally this is a fail-safe feature for idiot drivers and missed shifts. Note that this cannot prevent you from over-revving the engine from a bad downshift.
The Hondata, and most other aftermarket ECU systems will allow you to adjust the Rev-Limiter to any value you wish. If you have a stock H22A, the Redline is at 7400 RPM, and I wouldn't set the Rev-Limiter any higher than 8000RPM. No ECU will change your engines Redline.
:smoker2: