to no codes and no issues with the cats gone. I'm no expert but it kinda sounds like Honda did what Chrysler does; lock the ECU. Even though Chrysler locks their ECU, it can now be fully programmed in the aftermarket... but it took well over a year for a company called Diablosport to break the software locks. I would venture a guess and say the same could be done for GL1800 ECU's but I question whether enough aftermarket support exists for a company to recoup the cost of doing this.

I run catless midpipes in my car and the stock OEM exhaust. With the cats removed, the sound went to a decidedly lower, bass-ier sound... nothing loud and obnoxious, just a deep aggressive sound at idle and, well, ok it screams like a banshee at full throttle If the Torq Loops do something like this for the F6 I'd be a fan.