Ok, now I must say this is definatly a new mod to me. Aparently, cars after '96 are equipped with OBD2 in their ECU's, and "detune" themselves after you perform most mods. It uses data from the sensors to detect other-than-stock emissions, and will adjust to compensate, cancelling out the gains you got from the mods
The fix is a way to make the computer "forget" the corrections its made to the engine's tuning, therefore letting you have all the gains out of your mods.

Here's the link to the article, please check it out. It's all explained.

5th Gen Air/Fuel Controller - OBD2 "Workaround"

Is there any truth to this? Has anyone done it? or should I just forget I ever saw it...

 

Totally true and works wonders when using a high flow test pipe. It prevents you from having to reset the ecu everytime you add a mod, it also prevents cels. It works, all you really do is cut the ecu memory wire and run a switch to it and flip it off. This prevents the ecu from remembering what it's trying to retain. Takes about 2 minutes once you get to the ecu!

 

Ok, great so I definatly need to do this. Now, I know this is going to sound like a dumb question, but what do you mean by "High flow test pipe"?

 

So your saying after you do a mod on your engine it detunes and take away the horsepower gained from doing (i/h/e) the mod, or just takes a little HP away, IM CONFUSED

 

basiclly you lose the hp that your mods gained, so it would be like running stock after a week or so. You can also just remove the radio fuse and put it back in, that also resets the ecu.