After all the cylinders have been honed, rings have been sized, and valves have been lapped, the engine will begin its assembly process. Our engine builders will pay particular attention to clearances during assembly. Many engines will be assembled and disassembled several times to ensure proper fitment of cams, valves, pistons, etc. Only after they are satisfied, will our engine builders install your new engine back in its home and begin the break-in and tuning process. Whether it’s carbureted or fuel injected, Advanced Performance has you covered in terms of tuning. Jetting, Dynojet Power Comanders, Harley Davidson Super Tuner/Race Tuner, or any other type of fuel injection mapping software, our tunes will dial in your custom built engine for peak performance. Dyno tuning is always available.