Boyesen S & S Quickshot APC-SS Cost effective, bolt-on upgrade that allows accelerator pump fuel spray to be adjusted simply with the turn of a screw. Now the spray volume and duration cn be set based on engine displacement and level of modification Supplied with a new precision spray nozzle tip. The single hole sprayer tip directs and injects the fuel more efficiently than stock. A fine high speed stream of fuel, atomizes faster to improve throttle response and accelertion