Recent content by ssmartin

I have washer in the pipes right now from my ultra classic, the pipes came from this bike and I ran them open with the washer to create the back pressure. Is it the flow that I need to worry about with the carb or the back pressure for the motor?

Hi everyone I am new hear, Not new to bikes been riding for 30 years. I just brought my first 400xs and have a question about the exhaust, have a set of fish tails to put on it but need to know if the lack of back pressure will mess up the carbs??