Need help tweaking my SBP pipe

I just put on my SBP x chamber and high performance air filter and I am not that happy with the results. I'm not sure if I did something wrong or maybe this pipe isn't all it hyped up to be? I was running the stock pipe without the muffler cap before, and I was getting lots of low end torque and topped out at 34 with the GPS. After I replaced the pipe, it tops out at 31 and has NO low end at all. I can tell the pipe has some pull to it in the mid 20's that my stock didn't, but so what. I used to be able to cruise up this steep hill around 15mph, today I rode up the first part and immediately had to peddle for it not to stall and eventually just gave up and turned off the hill. I tried adjusting the header as long as I could to get the most torque, but still so weak compared to the stock pipe! I just spend $100 bucks on these two items hoping it was going to make my bike totally awesome. I'm pretty disappointed so far. Maybe I have to get the pipe welded and seal up any leaks where the silicone tubing covers?

I read that section while installing the pipe, but when I took it out for a spin and checked my spark plug, it looked like the carb was tuned correctly. See the next post for the picture of what my plug looks like after full throttle and killed the engine. It looks like a chocolate brown gray color to me so I thought it was fine. Note that this is the stock spark plug pushing 2 years old. I was thinking about replacing it, but haven't noticed any performance problems prior to these upgrades so I think the plug is fine. The filter is also from SBP, it looks real nice on my bike.

Here is the picture of the plug

When you shifted your power band down to low rpm's, did you try to make the header as long as possible? Did you leave the silicone tubing on it or did you weld it all up? I tried to make the header as long as I could to get the most torque and the bike was horrible at low speeds off the line. I had to get it going around 8 mph before I could let the clutch out or it would be very jerky and want to stall. Tomorrow I am going to put the stock filter back on and see if that makes a difference. Also, how temporary is the silicone tubing? I saw it melting a little on the header just after a 10 minute ride, is that normal?

Yes my engine was 4 stroking a lot now that you bring it up. But I think I discovered another part of the problem, my spark plug. This morning I put my stock muffler and filter back on to do a test to see how it performed compared to last week before I did some repairs and maint to itand upgraded my parts, and I was shocked to only get it up to 27mph, where as last week I was going 34. So the pipe actually gave me about 4 mph faster than stock, but still lost all torque. Also, I noticed that it was jerky and sputtering when I was trying to get it started and got worse through the morning. After a little more experimenting, the spark plug wouldn't even spark. This was the stock plug and was more than 2 years old now, so I ordered a NGK and I am hoping this will help, but I don't think it will solve everything. I will be able to tell tomorrow if any of these problems were caused from an old plug and then go from there. For the 4 stroking, that means that it's too rich correct? So I will try to adjust the C clip on my carb I suppose and test it some more. It sounds like a new carb all together might be something to consider for the future as well...