Bought a 2010 Spyder, added a Hindle slip on. Bike then started blurping and farting a little. Then at about 400 miles, I added the exhaust wrap on the left pipe, now it runs like crap! Temp gauge never gets over 2 bars, and it backfires very bad and falls on its face when you try to accelerate. Made an appt with dealer to have 600 mile service done. They are telling me that I must add the "juice box" to correct this problem. Is this true? Anyone else had these issues? Thanks.