In order for the 1100 engine to run correctly you need to go to a 2-1 exhaust. Irresepctive of the aftermarket system, you are left with the highly restrictive factory rear elbow which kills the flow of this engine.
The H&H pipes look and sound good over stock, but you need to get a true 2 into 1 header in order to jet up and get any performance out of that bike. The stock rear exhaust elbow inhibits true performance in this engine.
Me too!!!!!!!!!!!!