Hello, my name is Raymond, I'm new on here. I just recently purchased a new SC Exhaust for my bike, because it didn't come with one like supposed too, since I got a great deal on the bike and I think it was set up Euro 4 compliant here in California. So I went to put on the new exhaust, which sounds sweet, the bike would stall when cold, letting me know the it's not happy, because of a lot less back pressure, since the cat was no longer on there. I tried looking into getting a piggy back system, so I can have the bike tuned, but nobody makes one it seems for this year bike and I'm not sure if I can get the ECU reflashed with this set up to make this bike run right. Any suggestion please, would be greatly appreciated?