Kevin Molloy R.I.P. back in 2004 wrote as a member on the Massachusetts Chapter of the British Iron Association's website:
Quote: ...Be that as it may, having recalled that the Bonneville America in its stock finery was painfully quiet, I spent a great deal of time on www.bonnevilleamerica.com, a website dedicated for TBA and Speedmaster owners to share technical and non-technical banter and post photos of their bikes, behinds and the like. The website is a tremendous resource.
It contains links to various vendors which are making and/or offering a wide variety of aftermarket performance doo-dads and chrome tom-cobbley specifically for the Bonneville, TBA and Speedmaster. The website had an on-line survey of what members had done for performance hop-ups in terms of airbox and filter modifications; removal vs. non-removal of the factory air injection system; exhaust system relief; carburetor (carburetor) rejetting; and, air/idle mixture adjustment. Before I'd taken delivery of my Speedmaster, I knew everything that needed to be done in order to make it run respectably.
