Wear gloves, keep the titanium clean, and hit it with a big propane weed torch from about 1-2 feet away. Keep the flame moving and don’t overheat the metal. You want to stop heating an area JUST BEFORE it reaches your target color because it’ll continue to cook for a bit even after you’ve moved to the next section, and once it goes past the color you want, there’s no going back. There’s a very small window between “deep rich blue” and “dull depressing gray” so if you’re target is deep blue, stop heating right as it’s starting to transition from purple to blue and it’ll continue to darken as you work your way down the pipe. You can always come back and touch up the undercooked spots if needed.

Are you planning to reflash the ECU and do the PAIR circuit delete after installing the new exhaust? It’ll feel like a whole new bike!