Hi guys, I'm new to the forums and am having a little trouble with my car. I have an 05 xr6 turbo mk11, 6 speed manual. I recently purchased an xcal 1 from a performance tuner who immorally sold me it with 2 generic tunes for my car. I was unaware of the fact that the xcal 1's can no longer be used to custom tune, so this box is useless to me and the dealer wants nothing to do with it and will not refund me. Apparently he has an old dongle with 200 tunes left on it and will continue to sell them on ebay until it runs out. When plugging it into my car, it runs really rough at about 3000 rpm+ and feels like it isnt getting enough fuel. It feels like its leaning and makes small vibration with a weird noise. However after having the 10psi generic tune running for less than 2 hours, as I went to take off, my car gave a huge backfire and the car bunny hopped while I was driving.. seconds later I pulled over to make sure everything was ok, and there was a ticking/knocking sound coming from the engine bay. Would anybody know what this sound is? It sounds like its coming from the back of the engine, maybe even from behind the turbo. Any suggestions would be helpful. thanks guys