Just fitted my new barrett single exhaust what a difference it made, I have the otr foam filter without snorkel so it has a 90mm intake and kevs fuel mod with O2 controller. As soon as I took it for a ride I could notice the difference in the lowend it now pulls from just under 2k and near no surging. However the popping or explosions u might call it was so intense LOL was fun for a few rides but I could see in just a few mins it was gunna drive me nuts. So I looked into blocking the AIS only took me 5mins I had a little round head hex bolt that was just ment for the job 
        

 massive difference no popping and the bike feels amazing. Turned up the kev mod to 8 and it goes like a rocket now happy days. Also fitted a pvc tool tube on the other side painted it up black and it looks complete.
         
        
 Here's a pic of my beast it's before the exhaust and tool tube install bit will give u an idea.
         
         
        
 
         
         Have done a far bit to her so far:
         
        
 Barrett single exhaust
        
 Otr foam filter snorkel removal
        
 Kevs fuel and O2 mod
        
 Blocked AIS
        
 Pvc tool tube
        
 Tkc 80 front and rear
        
 Heavy duty tubes 
        
 14 tooth front sprocket
        
 Crush drive rubber mod
        
 Bash plate
        
 Engine/crash gaurds
        
 High front guard
        
 Radiator guard
        
 Yamaha hand guards 
        
 Gps mount
        
 Bar risers
        
 12v aux socket
        
 Cut down front screen 
        
 Rear rack
        
 Small Tail tidy using original tail
        
 Mesh guard over front of crash bars
        
 Led aux lights mounted under headlight
        
 Headlight mesh guard
        
 Giant loop great bassin rear bag plus tank bag with tank panniers and bar bag 
        
 12 lt fuel bladder for long trips
        
 Have pulled down the whole rear end and front end re greasing all bearings. 
        
 Made up a nice spares bag and very comprehensive tool kit
        
 Prob a few other small things as well
         
        
 Things on my todo list:
         
        
 Custom suspension
        
 Excel rims with rim locks
         
         
         
         
         
         
         
        
 Time spent without rod in hand is time forever wasted.