Go to the tech section and find "carbs". There is a wealth of info there. L9ng story short, the 78/79 carbs represent early EPA compliance and are a tad lean. Freeing up flow via pods and open (er) pipes means the engine needs a touch more fuel. In the BS38s it is a very simple procedure. Niche Cycle sells jets at ~$4.75 each. Look at the info in the carb section and order the @5twins recommendation. No one on this forum can remember @5twins ever being wrong on carb advice. Both jets can be changed with out removing the carbs from the bike.
