I have a 2007 S2R 800 with Arrow slip-ons, and I was browsing the internet for the Arrow collectors to make it a full system when I realized there's no 2007 version of them. The header on the 2007 S2R 800 is different from the previous models. Is the only way to cut the original pipes' header and weld it to the Arrow's? And I assume there's no lambda sensor plug in these collectors either (since there's no 2007 version) so I'd have to get the ECU flashed right away or make a hole for it. If so, might just go with the Spark decat...
