2009 T-Dub wont break 50mph?

OK my 09 wouldnt top 50mph, my 99 will. So i start looking at the sprockets....Yep 09 has a 45 and the 99 a 50. So I order new chains and sprokets. Toss on the 47, and head out for a ride.....no difference from the 45t. I replace it with a 49, now the bottom end matches my 99 but at 50mph i hit the same wall. Bike just boggs and wont pull any harder..... So what is the issue?



I have changed the 09 carb to a 130 main, 2 turns out on screw, and 2 shims. Also i do believe the spark arrestor has been removed. As it is much louder. I adjusted the valves, exhaust was wihin limits, intake needed to be adjusted. About 47xx on odometer. Running Bridgestone street tires. Bike seems to run great until you try to go over 50mph in any gear.



The 99 is bone stock,and pulls great through all the gears.Really fun to ride this one, not so on the 09.



1.So could the spark arrestor being removed cause me to not have enough back pressure on top end?

2. Because no arrestor i need a larger main jet? (I live in south Alabama.)

3. I could possibly swap exhaust from my 99 to the 09 to see if this helps.

4.Carb has serious issues....but runs great otherwise?

5.Compression is low? I doubt this as it has matching power to my 99, if not more so on the bottom end now with the 49t.

6. Possibly issues with air filter? I havent changed it but wouldnt think this would be the issue if it ran good otherwise.

7. Possible leak around inatke boots?



What else would you suggest i try? I was hoping to get it all worked out tonight, I wanted toput in some ride time before i have to go out of town for a week. Thanks in advance........