((I am interested in installing a supertrapp ids on my 450. I would like to know if it makes a noticeable difference in power. Can you just bolt it on or do you have to make carb adjustments to make it run right. How much louder is it than the stock system.))

When I installed the HL kit, Supertrapp specificallly mentioned how it will necessitate the change of jets, etc since the exhaust system is freeing things up a bit. Best to take a full approach to it rather than just replacing one component. Remember, one will affect all the others.

Joe