Putting the V&H Bigshots on, should be accompanied with rejetting the carb, if carburated, but if the bike is EFI, then take a look at adding a Power Commander and having it reset the fuel curve of the stock unit.
I have a 00 Ultra Classic with stage 2 kit, scream'n eagle exhaust, and a remapped fuel management, but added a Power Commander for the final tuning. I'm getting 90 hp and 93 ft/lbs of torque at the rear wheel, which it great for fully loaded touring....
P.S. My SO has a 98 Kawasaki Vulcan 800, with V&H Straightshots, and we rejetted the carb with their kit.... Gas mileage is a little better than stock, with wonderful power gains, not to mention, that without a tach, now she can tell what the engine is demanding.... LOL
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.