Thing is, I roughly understand how OBD-1 closed loop works, and they can really tune themselves at part throttle. The WOT is where it switches to open loop, where it doesn't tune itself, but rather rely on the maps that the factory pre-programmed into the ECU, and this is the only point where you may feel the car feels 'out of tune' due to various wear and tear (or maybe carbon buildup?)
I'm not sure what the you've heard, but I'm sure if you go to the authorised honda service centre and ask for a remapping/tune.. I think they will give you blank looks.
What they will do is try restore the engine to the factory condition, so that the car runs and drives properly.
Well, that is my opinion, and if you feel that retuning will return the car to it's original performance state, then by all means do so, it's your car after all, and I assume you posted here to get opinions on tuning, or confirming what you believe in.
Now, if you say that you plonked in loads of performance parts and not seeing the 'performance', then maybe tuning might be a good choice for you.
Like enthusiast say, maybe 'tuning' things like valve adjustments/setting valve lash or change filter and other normal maintainance procedures will help, rather than an ECU remapping/piggyback unit.
Some call it tuning, some call blueprinting.. I call it maintainance.. so kinda long story behind it.
