Join Date: Aug 2011
Year/Make/Model: 2014 Kawasaki Vulcan Vaquero ABS SE
Color: Orange SE
Just be aware that every bike is different! Even though others do it without, yours might not.
Also, the cure for the decel pop is often setting the idle where it needs to be (between 950 and 1050rpms). SEVERAL people on this forum have commented the same. Most folks set the idle way way too low, which causes other problems (oil starvation to the top end, etc.). My THEORY is, that the low idle position is creating a 'rich' environment causing the exhaust popping. Remember exhaust popping is the result of running RICH. Higher flow pipes and intake create a LEAN condition on an unmodified fuel system. So the only way you get a RICH condition on a bike that's running LEAN is to reduce the amount of air below what the bike is mapped to be running. You CAN dial this out with a computer, OR, you can fix the issue entirely by setting the idle properly.
Also, running regular gas seems to fix the popping for some. Premium fuel resists burning and can burn longer, meaning it can pop. (Also, because someone always mentions it, Kawasaki recommends 87 octane for the 900. The '91' on the seat sticker is RON, which is the way they measure it overseas. Similar to kmh vs mph. Over here it's measured in R+M/2. 87R+M/2=91RON)
Just throwing that out there! If the bike is running lean you should certainly get some sort of fuel management. But if it's not, and you're getting decel pops- well; either way the idle should be set correctly!
"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."
Romans 5:8 (NIV)
2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer
2011 Honda Shadow Aero 750 (Wife's)
Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack
Past: 2006 Vulcan 900 Classic LT